I do like and use multi-touch gestures a lot, though I think 'hot corners' and additional mouse buttons could probably fill the same roll for me. My intellimouse (P/N X08-70385) has five buttons and in the past I've mapped those two extras to forward/backward browser commands and it worked pretty well. If you can get your hands on an intellimouse, I highly recommend it; mine is somewhere around 15-20 years old with yellowed plastic but it's still going strong. Best product ever sold by Microsoft imho.