Ooh.

Amy, I might use iAllergy. We need an air filter for the boys' room (Buster has asthma and looks like Bug is heading down that road as well), and they seem to have some good sale prices.
And I may have already used Total Karaoke (no!)... I had a friend who used a DJ for her wedding and I needed backing tracks with no vocals for her ceremony since it was on a boat and there was no accompanist.