al ship's top 50 pop singles of the 00s -- which is your favorite? (other than SUBG)

Both great, but no.

I think there is a certain air of absolute joyful plenitude and completeness and can-this-be-happening ecstaticness that a lot of disco-pop/house-pop anthems aspire to and that "Love At First Sight" actually nails.

Something like "Come Into My World" is going for a different vibe of escapist dreaminess (closer to "Can't Get You Out Of My Head", though that's slightly different again).