Group of government officials walking into the opening of... some legislative thing, led by two guys playing guitars and singing 'When the Saints Go Marching In'. Only in Colorado.
This almost matches the biggest WTF moment in the history of Law & Order:
Branch: You're fired.
Southerlyn: Is this because I'm a lesbian?
I totally thought I was being punk'd.
ETA: Man, why the hell does Dan Radcliffe have Tom hair in GoF? Seriously, the exact same length/style as Tom.
And oh yeah, Jason Dohring, also known as Logan Echolls from Veronica Mars? His dad owns Neopets. No. Freaking. Shit.