(Note: I'm just getting home from a long trip, so I'm writing this in the wee hours of the morning. Therefore, this isn't going to be an in depth review, and I apologize)

I think this is the perfect game to introduce people to RPG's.
For one, it's fairly easy (except for that final boss), if you get the Star B items and distribute stat points well. Even so, it's not a pushover. So it challenges just enough.

It has a surprisingly large overworld for a GBA game, but it isn't overwhelming. It's full of zaniness that bypasses and even at times parodies the RPG conventions. The story doesn't take itself extremely seriously, and you can tell from the onset. However, that's actually what makes the game stand out.

There are a large number of sidequests, and the graphics are charming, with great spritework that makes it feel like a DS game.
The battle system is really unique. Sure, it takes cues from its predecessors SMRPG and Paper Mario, but it adds its own twists. For example, in order to be able to dodge enemy attacks well, you have to read their cues. Some enemies will look left or right before attacking, some will have a red or green signal, which tells you which Bro the attack is going to.

It's a really interesting system. It adds kind of an active element to the turn-based RPG system. Instead of just waiting for your turn passively, it felt like you were really participating in the battles.

Recommending for just about anyone to try this one.