Video: Seth Rogen Testifies at Senate Hearing Detroit Free Press

Actor Seth Rogen's testimony this week at a Senate hearing brought humor to an often humorless room, as Rogen couldn't keep himself from cracking a few jokes even as he talked about a serious subject: Alzheimer's disease.

"The actor best known for his roles in comedies such as 'Knocked Up' made an impassioned plea before a Senate panel about the federal government’s role in Alzheimer’s disease," the Detroit Free Press reports. "He posted several items on Twitter about his experience in the halls of Congress -- and didn’t mask his disappointment that there were only two senators in the room for his entire testimony before the Senate Appropriations subcommittee that deals with funding for the Health and Human Services Department."

Rogen apparently was a bit ticked off at Sen. Mark Kirk, R-Ill., who "tweeted a picture of himself with the actor -- but apparently did not stay for Rogen’s testimony," the paper reports.

The report adds: "Judging from the news stories about Wednesday’s hearing, Rogen was eloquent and touching as he described how the debilitating disease has affected his mother-in-law at the age of 55 and prompted him and his wife to start the non-profit group Hilarity for Charity to raise awareness about Alzheimer’s."

Here's a clip of Rogen's opening comments during Wednesday's hearing: