Fred Armisen's Best 'SNL' Impressions: Joy Behar, Barack Obama & More (VIDEO)

Most everyone is excited to see Jimmy Fallon return to host "Saturday Night Live" for the first time tonight, and if his promos with Fred Armisen are any indication, it's going to be hilarious.

While we're plenty psyched to see Fallon on "SNL" again, we thought it was also a good time to take a look at Armisen's funniest impressions over the years, just like we showed you with Kristen Wiig last week.

From Barack Obama to Joy Behar to Paul Lynde and Liberace, Armisen's best impressions are even funnier when you see them next to the real-life famous faces he's impersonating.

Which "SNL" character's impressions should we make the focus of our next video? Tell us in the comments!

Video by Andrew Rothschild