I was looking at something in regards to the draft since 2000, and I came up with an impressive skill position team solely based on 7th round/undrafted players. Here it is:

QB-Tony Romo
RB-Willie Parker
WR-TJ Houshmandzadeh
Ronald Curry
Wes Welker
Marques Colston
Patrick Crayton
TE-Antonio Gates

Someone has tooooo much time on their hands!!!