"Trogdor!!! Burninating the countryside..."

In "Chosen" (Buffy episode 7.22) Andrew refers to "Trogdor, the Burninator." Those who are familiar with HomestarRunner.com will recognize this reference to the "dragon man" created by the character Strong Bad.

Andrew is also shown wearing a Strong Bad t-shirt in Angel 5.20 and I know somewhere I've seen a photo of Joss in a Strong Bad shirt as well.