What Doctor Who episode(s) make anda laugh?

Quite a few do! But the ones that come to mind are: Partners in Crime (The window scene with the Doctor and Donna is hilarious), The Lodger (The Doctor trying to act as a human is too amusing), The Runaway Bride (Pockets!) and dinosaurus on a Spaceship (Brian's komentar about his golf balls, and The Doctor akting the fool again).

There to many to type up.