Nintendo DS Lite

I got a new Nintendo DS Lite this weekend… and I absolutely love it.  I’ve never really been a gamer, but my husband introduced me to “Brain Academy” and I can’t stop playing it!  I ended up buying “Bust-a-Move” (one of my all-time favorite games) and “Brain Age.”  I already beat “Bust-a-Move” lol  Now what game can I buy next…? :D