There is a lot of material we could cover for future installments. A lot of people are recommending Sonic Genesis for the GBA. I've never played it as after Sonic 1 I never really cared about Sonic games with the exception of Sonic Adventure on the Dreamcast. I look forward to being impressed with the 32-bit GBA's adaptation of the 16-bit game. So many potential dumb blast processing jokes.
I don't think you will get excited over this, but many years ago I saw Gauntlet+Rampart for GBA reduced at the store and I happily purchased it...
I LOVE THESE GAMES!
...only to discover that these GBA ports of Gauntlet and Rampart were really lame.
This was pre-smart phone era (for me) and impulse-purchases often resulted in a "doh!" moment later in the day.
OH WELL.