Feet of Fury's not exactly like DDR*, you should pick it up and get a PS=>DC converter if you already have a PS dance mat.
The music...hmm, well, it's different. Personally, I like it better than anything I've heard come out of DDR. There's only ~20 songs, but it's worth it for $15 ($5 price drop, I picked up a second copy, heh).
*Well, yeah duh it's a dancing sim, but it's what they had in mind when they were making it. It's focused more on competition against another person, and yeah, the music, I love the music.