I see your lips moving...
....and all I hear is "Blah Blah Blah". Seriously I see all the 360 vs PS3 vs Wii arguments and it makes me laugh. I've played all three consoles and all three have their own benefits, and drawbacks.
The 360, first of all, while they fixed the overheating problem in the later generation, most people still own the original ones, and are still experiencing the issue. It sounds like a jet engine (even the new model - which is a HUGE oversight from MS) and does not come with a built in HDDVD drive - meaning you have to have an extra bit of kit dangling off it to play them, and is missing wireless networking, unless you spunk another £50 on the kit. On the plus points it has an excellent, wide selection of games (some of which are excellent), is "middle of the road" in pricing and very good graphically.
The PS3 has, at the moment, still some issues with the variety of decent games available (although it IS improving at the moment). It is also still (at this time) missing Blu-Ray 1.1 support, although that has been promised this month, and is the most expensive of the three. I also wouldn't buy the crippled 40GB version. On the plus side it has some refinements that the 360 doesn't - such as just whispering in comparison, built in wireless networking and Blu-Ray player, and the decent games are beginning to come. It also, in theory, has more potential graphically than the 360, although not many developers have managed to take advantage of this yet.
The Wii has, by todays standards, poor graphics, no HD player, and I would say very limited scope for improvement. The range of games for it, in MY opinion is pretty poor, as I could never stand most Nintendo games. However, the console was never aimed at the hardcore gamer - it is more of a family console, and is the cheapest of the three, being affordable for more people. Really the Wii is aimed at a different market to the other two.
So the arguments of "which is better" are pointless as the result depends entirely on what you want out of your console. I'm sure Sony won't be too upset by still selling half a million PS2's a month though, considering they make a tasty profit on each one. I seem to remember it took quite a long time for the PS2 to REALLY take off when it came out, as no-one could write games properly for it at first. Oh, the same with the original Xbox as well - which survived mostly due to Halo in its early days.