Goat poster
KANG LIFE
TJ Houshmandzadeh was a great short/intermediate route runner during his prime, not to mention that he could secure the football while absorbing hits like these (apologies for the poor video quality but it's all I can find on YouTube):
Other guys off the top of my head:
Panthers Steve Smith
To a lesser extent Giants Steve Smith (had that amazing year with 110+ receptions and no fumbles). Eli hasn't been the same without him to bail him out on 3rd and 5+.
Jason Witten (@Asantehene good call).
Wes Welker/Julian Edelman since both are essentially the same player.
Definitely Tony Gonzalez.
Gonzalez was just

Most unstoppable TE ever.
than his QB 
proceeds to call a draw play for AP first down 

