"Answer is "c" Optical Trackpad"

"Hi,Need advice to purchase a new handset. My essentials are--- Need mail facility--coorporate exchange server as well as rediffmail,gmail etc - Can open Excel,doc,& pdf files & edit & resend in mail.. --Is there any phone supporting blackberry functions.. - Need social networking sites- like facebook,twitter,orkut - Need some good apps - As I am travelling a lot.need some multimedia player & games... Battery life I can ignore keeping in mind all functions.. confused be..."