Well, yes. When Chazz Michael Michaels and Jimmy MacElroy, the two skating partners, are performing to a science fiction theme, they choose "Flash" as their song! You all needed to know that. Hilarious film, by the way; I highly recommend it. :P
EDIT: This is what they were wearing at the performance: link
Aaaah! I watched that movie today! When Flash came on I started to sing and all my friends told me to shut up! It was an o.k. movie, but it was kind of dirty in parts...more dirty than necessary, at least. I liked it anyway, though. I love Jon Heder! :D
^ Pish- posh, it's wasn't that dirty..!
BUT I'll be willing to bet that you thoroughly enjoyed the 90 minutes of Jon Heder in spandex and the part when he took off his shirt. XD I did. SHHHH. :0
^ahhh..Jon Heder without a shirt...:P
It was so sort of dirty! That part about the Korean chick's head falling off was horrible! And when those two other pair people (the brother and sister) made out! That was sick! And Will Ferrell didn't have a shirt on! D: