Mashup Time with DJVC

I've been working on some mashups this week, and I made 4. I want to hear your opinion, so post it in the comments.

Deadmau5 vs. Bingo Players & Diplo - Reward Is Get Up Cheese (DJVC Mashup)
Deadmau5 vs. Sean Paul - Ghosts 'n' Temperature (Hard Intro + DJVC Mashup)
Boys Noize vs. Justice - Let's Buy Phantom (DJVC Mashup)
Dave Darell vs. Robin S - Show Me Children (DJVC Mashup)