I Go By Many Names has asked if I can recommend a funny, one-act play (I think for a 6th-form production, but correct me if I'm wrong Igo). Anyway, I can't, because I know nothing at all about plays/theatre/greasepaint stuff.
Suggestions so far:
cello said..." 'The Bear' by Chekhov, is, I think, both funny and in one act. Just 3 people too."
Um, that's it. So if there are any more potential single-act hilarities, please list them in the comments below...