I donno man... I can't think of any underrated song right now.
The cool thing bout Tech is that there is SOOOO much to chose from! I just got back from a 13 hour trip through the desert (all you ARIZONA people, I LOVE your state) and I finally had a chance to go through all the burnt cd's that were in my car forever, I heard songs that I haven't heard for over a year and 75% of it was ALL Tech!!!