I think I would want to see the future. Maybe 100 years into the future, but I would be scared to time travel because of the crap that can be messed up.. We've all seen Back to the Future.
I don't think time travel is possible anyway.. I mean.. it's just impossible. There is nothing in physics or science or math or anything known to man that can justify even thinking that it is possible.
That being said, I know that this thread is just for fun so that's why I answered. But I definitely hope time travel is never possible... Never..
I would go back to the time of Christ. Primarily for the historical reasons. That is also an era when things were moving so fast: art, literature, technology, thought, etc. at the same time, it was still somewhat primitive. I think I would be amazed at the similarities between then and modern life.