Fred.

Ray's totally into Scooby Doo right now. We watched Scooby Doo: Where's My Mummy? tonight. There's a part where Fred is trying to put himself in Scooby and Shaggy's places in order to figure out where they might be, and mimics their voices.

So imagine my amusement when I was watching the credits, and the same actor, Frank Welker, was listed as both "Fred" and "Scooby Doo."

Jeez. This guy's as versatile as Mel Blanc:

Dinky Dog
Jabberjaw
Dynomutt the Dog Wonder
Shmoo
Hefty Smurf
Iceman (from the Spiderman cartoon)
Uni and Tiamat (from Dungeons and Dragons)
Scooter (from Go-Bots)
Pretty much the majority of the characters on Transformers
The Gremlins
Slimer (from the Ghostbusters cartoon)
Abu (Aladdin)
Curious George...

I got tired of typing, so I end with a quote:

"The best letter I ever got (and I have had lots of mail) was from a little girl back east who invited me (AKA "Hefty Smurf") along with Papa Smurf and Smurfette, to have tea with her in the forest."