“Groovy Motherfucker”

Setting up the Facebook app on Xbox Live.

Rather than the gorgeous OAuth flow used by the Netflix app for the last year (The Xbox displays a six-digit number, you visit the Netflix website on your PC, log-in and enter that number, Tada, everything's linked), the Facebook, Twitter and last.fm apps all require you to fiddle around, entering email addresses and passwords on an on-screen keyboard.

Oh, and remember not to change your password on those services, because you'll need to go through the dance again.

(Particularly like this: "If you can't enter the characters you need here, change your passwords on www.facebook.com")