I use to specifically look for the 777 flights between ORD-DEN, SFO-DEN, and DEN-IAD but now that they just give out the BOB meals they sell in coach, I actually look for 757s and get a real meal...I have a feeling there are a number of "regulars" on those 777 flights that are making the switch...as for my favorite flight...I guess it is SFO-PDX since it only takes a single e500 to upgrade and it ALWAYS has cleared for me at (or before) the window...on the flip side, the morning 737 flight from PDX-SFO is totally impossible to upgrade...ever...