Should a non-Power User buy Leopard or not?

I just jumped back on the Mac bandwagon this summer picking up a MacBook Pro… It’s been a long time since I’ve owned a Mac, to be honest, they just cost too much to consider owning during my post undergrad years, and I managed to get by with crappy Dell laptops for the better part of 10+ years. My previous Macs were a Plus (with a whopping 20 meg external hd) and then a IIsi I overclocked with the crystal swap trick… My point here is OS X 10.4 is my first mac OS since 7.0… I’m only now sort of picking up the tricks for getting the most out of Tiger… Is Leopard really that amazing that I should pre-order it? I just have been out of the mac fold for so long that I just don’t know enough about Leopard to know whether or not it’s worth it for a user in my current position… Any thoughts??? Thanks in advance for your time.