Best/Favourite Cameo appearance ever...

[shatnersbassoon]

What about Lemmy in Airheads:

"I edited my high school  magazine!"

and White Zombie.

[andrewe]

Madonna in Die Annother Day
Paul Glaser and David Soul in Starsky & Hutch

these are both shit.

And here's a more difficult one: name a recent british film production which doesn't feature a Cleese cameo.

[Jemble Fred]

Potato Men
Fat Slags
Churchill
Shaun o'Dead

There's four for you sir. Sorry to take you so literally.

[andrewe]

that guy who had that wanking problem in Brasseye

Simon Kunz also makes an appearance in Spaced and The Affair of the Necklace (on tv last night!)