Tina Fey reunited with her former "Saturday Night Live" Weekend Update co-anchor Jimmy Fallon last night on "The Tonight Show." The star of the upcoming film "Sisters" might be known for her stellar Sarah Palin impression, but that is, apparently, about all she can do. The host and former star of "30 Rock" sat down and played "First Impressions," a game where Fallon and his guest must try to impersonate someone famous.

"One of the things I love about you is your impression of Robert DeNiro," Fallon told Fey. "It is one of the worst impressions I've ever seen."

"Yeah, it's terrible," Fey agreed.

"It's tricky because I stink at impressions and you're very good at impressions," said Fey of the game. "Yeah this is not fun at all," replied Fallon before they each took turns guessing the other's impersonations.

Fey was up first and drew a card that said she had to impersonate Jack Nicholson and read the phrase that was son the card.

"Did you see that Adele concert tonight? That little gal's got a heck of a set of pipes on her," Fey said in a bad impression of Nicholson.

Fallon was unsure who exactly Fey was trying to impersonate, but managed to guess Nicholson or Matthew McConaughey.

Fallon first chose Barbara Walters and Fey guessed it right away.

Check out the video below to check out some more of Fey's bad impressions below.