Amy and I picked this up for Wii on Saturday because we heard it has a great cooperative play mode (it does) and we wanted something to play together. It's a compendium of Lego Star Wars: The Video Game and LSW II: The Original Trilogy. Since then we've played through the first few levels in Episode I. It's a fun platformer. Amy seems to be a darn good shooter, while I'm a better light-saber swinging Jedi. Works for me.
The levels themselves have a lot of replay value. You'll find new things each time and you'll gain access to new areas in free-play mode by using different characters. I've heard things only get better as the Original Trilogy levels are superior to the first game. We'll see what happens when we hit Episode IV.
If there is anything bad about this game, it's how hard it is to find a copy. We tried picking it up at Walmart and GameStop with no luck, but our local Best Buy had a ton of them. It has definitely been worth the $20 I spent once we found one.