This game has so much personality...I absolutely love it. It is such a shame that it has essentially bombed at retail in the US.
Elite Beat Agents is one of the funniest games I own for DS, and playing it is one of the most euphoric rhythm games you'll ever get on any console, even if you don't care for the song selection present in E.B.A..
Just marvel at its beauty in the video below. If you see it, buy it up instantly. There is absolutely no way you can go wrong with Elite Beat Agents. It is the perfect game to just pull out and blow a few minutes with, and many times you'll get hooked and you'll be sucked in for hours.
Note: It's recommended that you go take the direct link because it looks a lot better resized to its appropriate proportions.