I'd like to know what "classic" flashing lights is talking about, though...
Yeah I don't see any "classics" either but it is quite obvious he is referring to Britney because no one in their right mind would call any Ashlee song a "classic". They would need to be immediately checked into a mental institution if they did.
I did hear a mashup of Toxic and Faint (from Linkin Park) years ago that was rather awesome.
Hearing Britney with rock beats is so weird. She makes Linkin Park sound girly. There's a Muse/Britney mash-up that I really like, it's called "Britney's Massive Hole." I love how all the comments start with the "I don't like Britney but..." line.