Great stuff here for sure. I'll have to maintain a pointer to this thread for future reference.

You can take the F#7 chord that Rick mentioned ("Take a standard "D" chord...but..play it on the 2nd, 3rd, and 4th strings....") but use your second, third and fourth fingers to make it. This will leave your index finger free to add the F# on the bass E string. The A string is damped out by touching it with the index finger. This gives you a great sliding or movable 7th chord. Here it is one fret higher as a G7 chord. Very closely related to this fingering are the movable sixth and movable Maj7 chords.

      - Mark