Most of the activities I perform work better with multiple screens simply because I can have applications maximized on separate screens. Whether it be surfing the web, working with spreadsheets, or debugging applications.
As for gaming, a single, large screen would be fun. Add in left & right screens and it's even better.
I've used Avast (okay), AVG (slow), and Vipre (annoying).
Compared to those, Microsoft Security Essentials has presented me with the fewest problems (none in fact), runs the quickest from an old, trusty, 1.4 GHz Pentium with XP Pro to a newer HP Laptop with Windows 7, and more importantly, has stopped several drive-by trojan installs (one came from MSNBC of all places).
Don't even get me started on Symantec.
Q: What food group makes women desire less sex?
A: Wedding Cake
Gee, Toto, I don't think we're in Kansas anymore.