DC duel: Seth Rogen blasts senators for skipping his testimony; Ben Affleck plays to packed house

Two A-listers were in Washington D.C. on Wednesday, but only one drew a Hollywood sized crowd.

Unbeknownst to one another, Seth Rogen and Ben Affleck made appearances on Capitol Hill. Oscar-winner Affleck spoke to a packed room about the situation in the Congo, while funnyman Rogen garnered a smaller audience for his testimony about Alzheimer's research.

Rogen arrived on the Hill with just his wife, while Affleck attracted a much bigger entourage, according to the Washington Post.

The Post reported that Rogen was surprised when reporters informed him that Affleck was also on Capitol Hill and speaking about the Congo. When asked who the better advocate was Rogen quipped, "I don’t know, does he live there?”

Rogen wasn’t laughing at the lack of senators in the room during his speech, however. The actor took to Twitter to call out the 16 senators who left before his testimony or did not attend, according to The Independent.

Rogen specifically called out Sen. Mark Kirk (R-Ill.), who tweeted a picture with the comedy star and thanked him for his testimony.

To further prove his point, the actor tweeted a photo of the empty chairs at the hearing.

Still, Rogen delivered a heartfelt speech—with a few jokes thrown in. 

“Thank you for the opportunity to testify today and for the opportunity for me to be called an expert at something because that’s cool,” Rogen said as he began his testimony. “Yes, I am aware that this has nothing to do with the legalization of marijuana. In fact, if you can believe it, this concerns something I find even more important.” 

He also made fun of Sen. Tom Harkin (D-Iowa) for not seeing his film “Knocked Up.” 

He then launched into an emotional story about his mother-in-law, who began showing signs on early-onset Alzheimer's disease at 55 years old. He shared that his wife’s mother was unable to “speak, feed herself, dress herself, all by age of 60." 

"The situation is so dire, that it caused me, a lazy, self-involved, generally self-medicated man-child, to start an entire charity organization," he said, explaining that he launched Hilarity for Charity to raise money for research and for families struggling with the illness.

Affleck used his time in DC to speak before the Senate Foreign Relations Committee about the Congo.

Affleck, who has made nine trips to Congo, expressed cautious optimism about the outlook for the African nation while imploring lawmakers to remain diligent.

"The accomplishments over the last year were hard fought, but they are fragile and they are reversible," Affleck told a full hearing room.

The Associated Press contributed to this report.