It's the best portable Web surfing device. The initial Wi-Fi version sort of limits where you can use it, though. You can wait for the 3G version and its $15-per-month AT&T 3G service, or get a MiFi from Sprint or Verizon (which also can be used with your laptop).
No manual necessary; Access to nearly all iPhone apps; 10-hour-plus battery life; Bright 9.7-inch IPS LCD screen; Three external buttons; Multi-directional accelerometer
Highly reflective screen; Slippery; No multi-tasking (yet; "Only" a few thousand iPad-specific apps (so far