Bruno Mars mentioned P90X in his song, The Lazy Song. The official video is below. It's pretty funny and the song is clean except for that one line:
"Tomorrow I'll wake up, do some P90X. Find a really nice girl, have some really nice sex. And she's gonna scream out. This is great."
It's neat to see P90X being mentioned in more and more places.
http://www.youtube.com/watch?v=fLexgOxsZu0
I'm a bit behind the times it seems as this was released in Feburary 2011.