I have a Strat and a Nippon acoustic.
I play mainly Thrash Metal such as Metallica (mainly. They are my metal gods), Testament, Megadeth, etc.
My guitar is sucky (it's not an original Fender Strat), but I can live with that. I'm planning to buy something more serious like a Les Paul or a Flying V in the near future...
About songs...
The best warm up song (in my opinion) is Master of Puppets (Metallica) and it's definitely fun to play so I love to play it. Others are "The Ballad" (Testament), Fade to Black (Metallica), Hit the Lights (Metallica), Stairway to Heaven (Led Zeppelin. I know. It's not Thrash) and such.