Wait, was I mentioned in the same sentence as @JDRoberts? Sorry, JD, I seem to have brought you down a few notches by my mere presence.
To be honest, it is so hard to keep track of what is new out there, what has been updated, and what people are working on. Without a true App Store, with proper categories, search functionality, ratings, version history, detailed descriptions, and screen shots (yes, those are very helpful as well), there is no way to keep up with all the apps out there given the number of posts around here lately. I generally just search the forums (and then search again, and again) to see what I can find. Then, when I can’t find anything, I post like everyone else and how some Good Samaritan who might know something shoots back a reply.
So, building a Top 10 list would be hard. I could only speak to what I use.