Oh hell yah, the Wii is definately worth the money. Considering that the system only costs $250 (the cost of an ipod) you get way more than you pay for. Sure, PS3 has alot of games and a big hard drive, but it cant compare to the Wii.
There are a lot of great games for the Wii. Sure some are cheesy, but there are some nice ones. Latley ive been plaing call of duty 3 (great shooting, driving, battles, all that) and later today im going to pick up spidey 3. Just the fact that all of the controls are motion sensitive makes you feel like you are in the game. Wii sports is great for when you are entertaining, very interacitve and user friendly.
Also, the Wii has a neat weather, news and internet browser feature. I use the Opera internet browser ALL the time because it lets you surf pages like never before. You can enter in and give out your wii code to friends so you can message and play with eachother.
Here are a few videos of the wii in action, hopefully they will inspire you to buy a Wii like i did.
Wii Internet Broser in Action (Note, that is the old trial version, the new version doesnt have those annoying sounds when you click)
Call of Duty 3 Gameplay
Also, if you are having trouble finding one, i would try calling Target and Walmart first. I work at my local target, and on sunday mornings we usually have 4-5 Wii's in stock. Just go early to a gas station and get the sunday paper to check the ad. Walmart tends to get their shipments in on fridays. I was calling around last firday night to see if anyone had one, called walmart at 8pm and they had just gotten in 5 that night. Best of luck!