(CNN) - The Internal Revenue Service controversy took a few sharp turns this weekend, with the Cupid Shuffle, lavish hotel expenses, and the head-turning "L-word" finding its way into the mix.
In case you weren't following the latest updates on the unfolding scandal, here's what you missed over the last few days:
"And I thought doing the Star Trek video was humiliating."
Friday afternoon, CNN reported that the Treasury Department's inspector general for tax administration - the same watchdog that reported the IRS was wrongly targeting conservative groups - will release another report this week.
This one hits the IRS on a different front: overspending on conferences.
For those who followed the General Services Administration scandal last year - in which the agency was caught spending close to $1 million a 2010 conference in Las Vegas - this IRS story may feel like déjà vu.
The new report's findings will show that the IRS spent close to $50 million on 225 conferences between 2010 and 2012. The House Oversight and Government Reform Committee will hold a hearing Thursday on the issue, focusing on one 2010 conference in Anaheim, California, where the IRS spent $4 million.
CNN obtained an apparent team-building video that was shown at the end of the conference. In the piece, IRS employees are being taught the Cupid Shuffle as they prepare to present the dance as a group at the event.
Sounds simple enough - except the nearly three-minute video cost $1,600 to produce. This was shown along with a Star Trek-themed video at the same conference, with a combined cost of $50,000 for both pieces.
The IRS said Friday night the dance video "was unacceptable and an inappropriate use of government funds." (The agency already took heat earlier this year for the sci-fi video).
"And I thought doing the Star Trek video was humiliating," one woman says in the new video.
Other details emerged this weekend about the 2010 conference. Fifteen outside speakers were hired to give presentations, totaling $135,000, the oversight committee was told by TIGTA. One of the speakers, who was paid $17,000, led a session called "Leadership Through Art."
Some IRS employees stayed in presidential suites at the three hotels booked for the conference. Such suites currently cost between $1,500 and $3,500 per night.
It's hard to find defenders of perhaps the most vilified agency in government, fueling conspiracy theories and raising questions of how far it went. So Thursday's oversight hearing will surely be one to watch.
Conservative sites tie IRS controversy to liberal group
On Saturday, CNN reported on a connection drawn between the IRS's former head, Doug Shulman, and his wife's employment at a liberal group, Public Campaign.
The conservative website Breitbart posted that "the goal of Public Campaign is to target political groups like the conservative non-profits at issue in the IRS scandal," naming the campaign finance reform group where Shulman's wife, Susan Anderson, is the senior program adviser.
Public Campaign spokesman Adam Smith said the Breitbart description "is not at all accurate."
The connection has nonetheless been making big waves among conservative sites and blogs.
'We're getting to proving it,' Issa says
Fast-forward to Sunday, when House Government Reform and Oversight Committee Chairman Darrell Issa appeared on CNN's "State of the Union" for an exclusive interview with Candy Crowley and got the political universe spinning.
In the sit-down, Issa said interviews with workers in the Cincinnati IRS office, where the tax-exempt division is based, show targeting of conservative groups was a "a problem that was coordinated in all likelihood right out of Washington headquarters - and we're getting to proving it."
A bipartisan group of investigators from two House committees - Ways and Means, and Government Reform and Oversight - interviewed two front-line employees from the tax-exempt office last week.
The employees rejected accusations that lower-level employees in the tax-exempt division were responsible for the IRS snafu. They stated they were instructed from superiors in Washington to carry out the scrutiny of conservative groups seeking tax exempt applications.
Read excerpts from the interviews here. (Note: CNN asked for but was not provided the full transcripts)
Democrats on the committee argued that Issa was mischaracterizing the interviews and expressed frustration that Issa withheld the transcripts from the minority party on the committee before he went on air, CNN's Dana Bash reported.
Rep. Elijah Cummings, the top Democrat on the committee, called Issa's behavior "reckless" and his claims "unsubstantiated."
Cummings' spokeswoman Jennifer Hoffman said it was not "standard practice" for the majority in the committee to keep the transcripts rather than share it with the minority.
"The standard practice would have been for them to provide the transcripts to us when they got them. We have requested them, but have not gotten them," she said.
Republicans ultimately handed over the transcripts to the Democrats on the committee late Sunday night.
Oh, you went there?
During his interview on CNN, Issa took a biting jab at Jay Carney, calling the White House's top spokesman a "paid liar" for repeating the IRS line that employees in Cincinnati were responsible for the IRS mess-up.
"Their paid liar, their spokesperson, pictured behind, he's still making up things about what happens," he said, pointing to a photo of Carney on the set.
While Issa is known to be outspoken, people in Washington tend to avoid the loaded word "liar," as CNN's Jake Tapper explains.
"Issa using the "L" word – liar – is unusual in a town where pols and members of the media regularly dance around such a direct accusation, preferring words that allow for the possibility of misspeaking or misleading, but not deliberately speaking an untruth," Tapper writes.
But things got more ugly Sunday night, when former White House adviser David Plouffe hit back in a tweet.
Tapper writes that "Plouffe's reference to charges and suspicions against Issa from his past ago is also unusual in a city where such mentions are considered gauche and uncollegial."
A week of hearings
On "State of the Union," Issa also previewed his committee's upcoming grilling of the IRS over its overspending at conferences.
"The culture of the federal workforce is one where I don't think you can underestimate that if you don't keep reminding the voters - but also the federal workers - that we're watching, this will happen again," he said.
But before Thursday's oversight hearing, IRS officials were to get a grilling Monday afternoon before a House appropriations subcommittee. Acting IRS Commissioner Danny Werfel will make his first congressional appearance as the newly appointed head of the embattled agency. He has already started making changes by appointing a so-called risk officer in the agency to help restore 'integrity.'
And on Tuesday, several tea party and conservative groups will give their side of the story before the House Ways and Means Committee.
While the IRS is surely looking to move on from its admitted mistake, it looks like the agency will stay in the headlines for at least another week.
Watch State of the Union with Candy Crowley Sundays at 9am ET. For the latest from State of the Union click here.