We have just purchased a Tascam DR-100 audio recorder for field production use. We expect to see this used a lot in our documentary group productions as well as musical and other sound critical productions. Here are some of the specs of the DR-100:

SD card recording.
MP3 or WAV 16 or 24bit. 44.1 or 48kHz.
2 XLR connections.
1/8 line in and outs.
Built-in stereo mic pairs. Both Uni and Omni directional.
Redundant battery operation.
External audio level controls.
External headphone output control.
External audio gain control.
External phantom power control.
Recording time at max quality: WAV@24bit @48kHz =2hrs on 2gb SD card.
Record 1 XLR mic in-put to 1 or both channels

Look for a special class on the DR-100 coming soon.