Well, let’s see, I can passably imitate:[ul]
[li]Richard Nixon[/li][li]Ronald Reagan[/li][li]Liberace[/li][li]Paul Lynde[/li][li]Wolfman Jack[/li][li]Bullwinkle[/li][li]Curley Joe[/li][/ul]
Interesting aside - Liberace and Paul Lynde’s voices were practically identical. If you can imitate Liberace, simply shake your head back and forth while talking and you’ll sound like Paul Lynde.
I do an EXCELLENT Craig T. Nelson 
Katharine Hepburn (young and old); Mae West; Bette Davis and Joan Crawford; Jean Harlow, Tallulah Bankhead and Marlene Dietrich (my lower-register gals); and–even though no one remembers what she sounded like!–1930s comedienne Lyda Roberti.
I’m a master of doing the King of Town, Homsar, Strong Mad, Bubs, and Coach Z. And ANYBODY can do The Cheat, Strong Bad, or Strong Sad.
I can do a great female version of **Jimmy Stewart **. My old boss talked j…j…ust like him, fercryin’ out loud.
Popeye. Well, OK. His laugh.
Dudley Dooright
Carole Channing singing Hello Dolly
and the one that drives them all right out of the room… I do a fabulous version of
“The Sun’ll Come Out Tomorrow”
complete with full Annie arm gestures and orphan eyes. And I do this whenever someone says the word “tomorrow” with a pause after it. Makes my dog cry.
Ben stein.
I can do a pretty good Chief Wiggum. It’s mostly snorting.
Elvis (and Johnny Bravo)
Ronald Reagan
Bill Clinton
George H. W. Bush
Sean Connery
Bullwinkle
B. J. Thomas
Arnold Schwarzenegger
Singing Louis Armstrong (just like 'ol Zenster)
In fact, looking at the lists, I’m beginning to think Zenster and I have similar vocal textures or qualities in our natural states…
Ralph Wiggum.
I can mimic Will Ferrel’s Harry Caray and Alex Trebek voices quite well, as well as Darrel Hammond’s Sean Connery.
How weird is that? I do impressions of impressionists.
When I was a kid, my baby brother would cry until I sang “Rubber Ducky” in the Ernie voice. Not only can I still do the impression, I still remember the lyrics. Mrs Fresh makes me sing “Rubber Ducky” in the Ernie voice from time to time. She says that she knew she wanted to marry me after the first time I sang it to her.
I also do a good Chewbacca growl.
And I can do a good impression of Neil Young, but only if I have a massive head cold. And a guitar. And if I can’t play the guitar well, because of the massive head cold.
Oh, and I can sing “Monkey Salad” in the exact same voice as the original singer.
That’s about it.
I can do Zorak pretty exactly, and Beetlejuice passably well.
Ooh I forgot some. Mickey Mouse, Goofy, Grover. Can’t do Donald Duck or Big Bird to save my life.
I used to be able to do a dead on Fozzy Bear, but it’s been awhile and I’m outta practice.
Me? I can do:
- Sean Connery
- StrongBad
- StrongMad
- Coach Z
- Baby Animal
- Gomer (From Punky Brewster.)
- Stitch (From ‘Lilo and Stitch’…the last 3 are all the same voice really.)
- Gollum (From LotR) (Tir has heard it. )
- My dickhead boss.
and The pimply geek in the Simpsons.
I can pull off Mickey Mouse pretty well, R2-D2’s whistles (can’t seem to get the beeps down yet) and I can imitate Jane from Peter Pan II: Return to Neverland almost EXACTLY. My father says I can sound like Shaggy from Scooby Doo on occasion. :shrug:
Username aside, I do a decent Kermit the Frog singing “Rainbow Connection” and Ernie singing “Rubber Duckie” (my neice loves the latter one). For some strange reason it only works when I sing, but not as a regular conversational voice.
I can do Walter Cronkite pretty well. It’s especially fun to read “Go, Dog, Go” in Cronkite’s voice.
And I’ve also read “Yertle the Turtle” using the voice of Mr. Burns for Yertle, and Homer Simpson’s voice for the lowly turtle at the bottom of the pile.
I do other voices as they come to me; Marvin Martian, most notably.
I also can do that wheezy cartoon-dog laugh, which drives my kids crazy, because they can’t.