Have played black pits a second time with a Marvel Avengers based team build, and it was a load of fun:
Captain America: Lawful Good Human Cavalier with proficiencies in flail/morning star, axe (to compensate for lack of missile weapons plus good cheap axe+2) and sword and shield style. Thought of other kits, Cavalier seemed to fit the role-play a lot better. maxed all important stats and charisma obviously 18
Hulk: Chaotic Good Half Orc Barbarian with proficiencies in Two handed sword, two handed style and later quarterstaff for slashing/piercing resistant enemies. Was real fun building and playing with this one as it pretty much fit Hulk to a tee. Strength and constitution 19 was a must
Thor: Neutral Good Half Orc Fighter/Cleric with proficiencies in warhammer and mace. Had to think hard about this one, but I needed a healer and holy powers and weaponry fit in well with the Thor persona. Half orc chosen due to lack of a better option and his strength and durability had to be on par with Hulk.
Hawkeye: Neutral Good Elven Archer. Max dexterity, full proficiencies in longbow, and one in long sword for melee and sling for those pesky clay golems (blunt damage only). Pretty standard archer build and was the easiest one to make.
Black Widow: Neutral Good Elven Assassin. Max dexterity focussed on range but used to backstab later in the game. Poison ability was great in black pits. Another one which was fairly easy to deliberate upon and make.
Iron Man: Chaotic Good Human Dragon's Disciple. Had the most fun making this one. Obviously there's no equivalent for a genius in a mechanised suit in D&D but I decided a wizard would best imitate Tony Stark's genius intellect and projectile and armour based powers. On top I feel the dragon's disciple adds a bit of durability with extra hit points in the black pits compared to other kits, as well as being able to pick and choose whichever spells I want to use in a battle. No need to waste money learning scrolls either.
Have also had fun with a Lord of the Rings based team, with a Cavalier (Aragorn - yes I know he's a ranger but I thought a knight type character fit his persona better and I already had Legolas as a ranger), Dwarven Defender (Gimli) as tanks, Legolas as an elven archer, Gandalf as a Dragon's Disciple (yes I'm a fan of DD in black pits), Arwen a Druid Avenger as my healer and back up attack spell caster, and finally Frodo as a Halfling Shadowdancer (get it??).
Any thoughts or any other mainstream superhero/movie/book/comics based teams anyone else has made?