Littleguru's thread inspired this one. Now that my new job (the one here at MS) will require me to travel more than I ever did in my previous three jobs combined, I'm thinking of picking up a DS-Lite for longer trips. I NEVER play my Gamecube anymore, so I figure I'll just trade in my Gamecube and all my games/accessories for it to offset the cost of a DS-Lite and games.

If I do pick up a DS-Lite, what games do y'all recommend that are "must haves" that I should pick up?