Originally Posted by Sagelobu
Rammus is usually banned, as are Akali and Jax.
Ryze is pretty powerful, but also can be countered fairly easy with the right champions.
XZ is overrated and dies quickly to the right choices.
My top picks would be:
Heimer (if not banned), Galio, or Teemo to defend bot.
Poppy or Sion
Nocturne or Gangplank
TF (if player is good with him) or Caitlyn/Vayne
Some other champions that are good:
Wukong (a good one)
Xerath (a good one)
Good movement, good damage, global ults, tanky/sustainability.