There is multiple!Wally fic out there. How could there not be, with that kind of canon? IIRC, there's one where Batman keeps getting him off, just to see how many times he can actually come before he collapses in an exhausted puddle. *happy sigh*

The Batvoice in The Animated Series def does it for me, which is a bit weird I suppose. A children's cartoon shouldn't really have that effect ...

Slade, in the Teen Titans cartoon. *shivers*

(Ron Perlman purrrrrrrrrs every time he talks to Dick! I swear to gods. :D )