The thing about impersonating someone else’s voice and mannerisms is that you are walking a very fine line between success and failure. There is nothing worse than a bad impression of someone, yet there is nothing better than a great one. And that is why we are presenting you with our list of the 10 best celebrity impersonations (done by celebrities) that we could find. Obviously, we couldn’t list them all, so sound off with some of your favorites in the comments below. (Editor's note: We already know we left off Tina Fey doing Sarah Palin because you've already seen that one a million times.)
Aubrey Plaza Impersonates Sarah Silverman
You know, sometimes doing the most generic impersonation of someone just doesn't work at all. But fortunately for us, this is not one of those times, as Aubrey Plaza nails Sarah Silverman's mannerisms and general feel to a tee. If you only know Plaza from her role on the NBC series "Parks and Recreation," this is a refreshing change of pace. Not to mention, it's quite hilarious.
Bradley Cooper Impersonates Christopher Walken
There are a lot of great Christopher Walken impersonators out there, from Kevin Pollak to Jay Mohr (whom we'll get to later). But for whatever reason, Bradley Cooper's just seems to trump them all. It's probably due to the fact that like many of the celebrity celebrity impersonators on this list, you just don't expect it. The guy also does a killer Owen Wilson to boot.
Conan O'Brien Impersonates Jay Leno
As far as late night talk show hosts go, Jay Leno is the Christopher Walken. And by that, we're saying that it seems that every other host has their own, high-pitched impression of him. And while the most famous one may fall on Jimmy Kimmel after he did an entire monologue in character, it just doesn't get any better than Conan O'Brien's. Even if it isn't exactly spot on, it never fails to get a laugh, and he's been busting it out randomly for several years, even prior to whole "Tonight Show" debacle.
Jim Carrey Impersonates Jimmy Stewart
Is there anything this guy can't do? I mean, we've all heard the Jimmy Stewart impression a million times from just about everyone (and let's face it, it's super fun to do), but Jim Carrey manages to add new relevance to it by pointing out how it seems like no matter what the occasion, Stewart's gonna put a positive spin on it.
Frank Caliendo Impersonates Jim Rome
This may be a bit unfair, considering that Frank Caliendo is less of a celebrity and more of a celebrity impersonator anyways, but this is an impression you don't get to hear very often from anyone else. And if you are a fan of Jim Rome's radio or television shows, you will be a big fan of this impression as well.
Matt Damon Impersonates Matthew McConaughey
Remember what we said earlier about the simplest, most generic impressions often being the most effectiv? This would probably be the best example of that. Not only does David Letterman get a huge kick out of it, he's asked Matt Damon to do it over and over again.
Kevin Spacey Impersonates Al Pacino
It's one thing to do an impression of another actor behind their back without them knowing, but Kevin Spacey has no qualms with doing one right to the actor's face. The actor in this case being Al Pacino. Now, Pacino himself may not think the impersonation is all that accurate, but we would beg to differ. Judge for yourself.
Jimmy Fallon Impersonates So Many Singers
Jimmy Fallon is a talented mimic as is, but when you throw music into the mix, it makes the impression even more difficult. That's why these impersonations of famous singers (and this one of Michael McDonald with Justin Timberlake) are all the more impressive. Not only that, but the way he can transition from one to the next so flawlessly is simply amazing.
Jay Mohr Impersonates Adam Sandler and Norm MacDonald
This one's a two-fer (technically a three-fer, if you count the quick Harvey Keitel). Good Adam Sandler impressions are pretty hard to come by, but Jay Mohr takes it a step further by not only adding in the very unique voice of Norm MacDonald, but then actually throwing them into a scene from a movie that is just completely obscure for those particular actors to be in -- "Goodfellas." The whole thing is just completely ridiculous, but it works so well.
Michael Caine Impersonates Michael Caine
Finally, we've come full circle. Now some may argue that this is not an impression at all, given the circumstances, but we think that Michael Caine is just THAT good. And honestly, if we're gonna hear yet another (fairly simple to do) Michael Caine impression, we wanna hear it from the horse's mouth. Plus, if it makes Billy Connolly laugh, you know it's gold.