I don't know about anyone else, but I'd kind of like to see a Mike Myers-Cailean. Just for humor purposes, of course. Could you imagine someone with Cailean's background running around with nasty yellow cracked teeth in that ridiculous clothing saying "yeah, baby!"
Malissana: Hello Cailean. Blah blah blah...
Cailean Myers: Hey, baby! Why don't we shag?
Or perhaps a Dr. Evil-Mike Myers-Cailean? the weird clothing from that one James Bond villian, a wee mole, and that little pinky-to-mouth thing when he does something clever.
I was going to say Fat Bastard but, uh.. we all know that wouldn't work out.
If Cailean does end up being based off happy, happy, Dr. Evil, don't forget about Mini Me!