Is this Broadband Any Good?

I finally got tired of using Dial up so I went online and looked for cheap Broadband routers and the one I would like to purchase is the cisco wireless-g B broadband Router model WRT54GS2 and I was wondering if it was any good since it has a data transfer rate of 54 mbps and is it good enough for watching videos and playing mmorpgs like World of Warcraft