Various Quake1 skins, collected from the Internet (some Downloads: here, here and here)
Austin Powers	Calvin and Hobbs	C-3PO
Batman	Cartman from Southpark	Silver Surfer
Scream	Ronald Mc Donald	Victoria/Spice Girls
Eric Cantona	Men in black	Ninja Turtles

Various Quake 3 Arena skins - Download at Bag O' Mods or Telefragged.
Betty Boop	Flat Eric	Animal	Flic/A Bugs Life
Jonny/No 5	Joker	Alien	Santa Claus
Lara Croft	Musashi/Pokémon	Snoopy	Catwoman
Kojiro/Pokémon	Butt-Head	Bender/Futurama	Kenny/Southpark