My favourites are :

• 2 (a milestone, also because the first one was more of a test for the real game)
• 543 (was a real step forward in the series, not like what was supposed to be 513)
• 28,334 (maybe I’m the only one, but I enjoyed that little part of the game about sex. Director changed and you can tell)
• 28,335 (same director than the previous one. After this one he left to enter CD Project)