Good game for the Gamecube-owning Star Wars junkie
Once you beat all three chapters, you unlock Free Play mode in which you can go through the levels once again but his time choosing any of the characters that you have unlocked whether you unlocked them via purchase or just the freebies from beating levels. This comes in handy for collecting Minikit and Superkit pieces. Minikit pieces are spread 10 per level hidden behind doors, floating in the air, or right in front of you. Superkit pieces are unlocked by collecting a certain amount of studs per level and once you collect all 17 (One per level) you unlock the Secret Bonus Chapter. It is often quite hard to collect all of the minikit pieces and the superkit pieces without going back through the levels as another character that you didn't have in your party while playing the level previously in Story mode. This increases the replay value for this game greatly when combined with the fact that the game is about 4 hours long for the average gamer. You won't stop after those few hours of story play mainly because you will want to save up enough studs (200,000) for general grievous who can jump even higher than Jar Jar Binks.
All in all this is a decent gamecube game that, to me, became freakishly addicting trying to unlock all the characters. I highly recommend this game to anyone who likes Legos, Star Wars, or decent gamecube games.