What a wonderful topic. I'm going to list multiple names along with my favorite non-TLK projects they were in that I saw, 'cause I'm very impressed with all TLK actors. I also follow some of their works, from film to TV and Broadway shows
TLK was actually the very first cinematic universe that made me look up the voice talents' other acting roles. Here goes my top favorites. Ladies first
1) Moira Kelly
Other favorite roles: The Cutting Edge, One Tree Hill, Twin Peaks: Fire Walk With Me
2) Neve Campbell
Other roles I enjoyed: The Craft, Scream movies, Party of Five, Drowning Mona (would like to see Blood & Steel)
3) Whoopi Goldberg
Other roles I enjoyed: Ghost, Sister Act movies, Glee, Sarafina!, Made in America, Rat Race, Rodgers and Hammerstein's Cinderella
3) Lacey Chabert
Other roles I enjoyed: Pride, Prejudice and Mistletoe, Party of Five, Mean Girls, A Royal Christmas
4) Suzanne Pleshette
Other roles I enjoyed: Maggie Briggs, The Birds, Blackbeard's Ghost
5) Jeremy Irons
Other roles I enjoyed: The Man in the Iron Mask, Being Julia, The Borgias, The Merchant of Venice, The Time Machine, M. Butterfly, Australia
6) Matthew Broderick
Other roles I enjoyed: You Can Count on Me, Ferris Bueller, The Stepford Wives, Inspector Gadget, Frasier, Election
7) Nathan Lane
Other roles I enjoyed: Guys and Dolls, The Birdcage, Stuart Little movies, Mouse Hunt, Isn't She Great, A Funny Thing Happened on the Way to the Forum, One of the Boys (looking forward to Penny Dreadful: City of Angels)
8) Ernie Sabella
Other roles I enjoyed: Saved By the Bell, Mouse Hunt, Guys and Dolls, A Funny Thing Happened on the Way to the Forum, Seinfeld, Man of La Mancha, Fright Night Part 2
9) James Earl Jones
Other roles I enjoyed: Gabriel's Fire, Everwood, Three Fugitives, Star Wars movies, Field of Dreams
10) Jonathan Taylor Thomas
Other roles I enjoyed: I'll Be Home for Christmas, Home Improvement, Last Man Standing, Smallville
11) Andy Dick
Other roles I enjoyed: Get Smart, NewsRadio, Inspector Gadget
12) Rowan Atkinson
Other roles I enjoyed: Johnny English movies, The Witches, Love Actually, Rat Race, Blackadder (Mr. Bean is entertaining but Mr. Atkinson's talking roles are equally fun LOL)
13) Cheech Marin
Other roles I enjoyed: Rob, Born in East L.A., Oliver & Company, Judging Amy
14) Jason Marsden
Other roles I enjoyed: Boy Meets World, Goof Troop, Goofy movies, White Squall
15) Jim Cummings
Other roles I enjoyed: Darkwing Duck, Balto, Christopher Robin, Winnie the Pooh, Chip n Dale Rescue Rangers, and many more