If we're gonna roll with the sexual thing (all in good fun) I say:

Tell me constantly about Bruce's massive shoulders and huge package
Barry Allen's lovely eyes and thighs
Superman's chiseled chest
Lex Luthor's sexy brain and deep voice
Hal Jordon's hot hairyness and rouge grin
Earth 2 Alan Scott's hunky bod (young)

Others in best ass category include Kyle Rayner, the previous Tempest, Barry Allen (Booth), Wally West. Of course it's all dependent on the art, really.

Yes, let's go for it and THINK...what major characteristic have we seen in all the main heroes that can be played up? And more importantly, make it a running gag in all the dialog. WHEEEE!