For starters there's a video output that allows you to run video from your docked iPad, iPhone, or iPod, to your TV using an optional cable. Alas, that video connection is composite, which means the video quality will not look terribly good (think VCR quality at best).
It's also worth mentioning that there's a USB port around back that allows you to sync a docked iPod/iPhone/iPad with iTunes on your computer (yes, your computer does have to be nearby for the included USB cable to reach it).
One note about the included remote: it's your basic, small plastic type that controls the music playback functions of your iPad/Phone (pause, skip track forward and back, and volume control). In other words, it's nothing special, but it is functional--and small enough to be easy to lose.
The OnBeat didn't blow me away with its sound, but for its size and price it's decent (most people will be impressed). JBL touts its "dual Phoenix full-range transducers with computer-optimized DSP equalization" that delivers "legendary JBL sound." That's pushing things a bit, but it does play loud and offers reasonable detail and can fill a small to medium sized room with sound.
Where OnBeat falls a little short is on the low end--there's just not a ton of bass here. And even with JBL's digital processing, you just don't get a whole lot in the way of stereo separation. That's par for the course with these types of speaker docks. To be clear, as far as sound quality goes, the OnBeat is nowhere in the same league as the OnBeat Xtreme. That model has much bigger sound, more detail, and much bigger, tighter bass.
Overall, the sound was a small step up from that of Altec Lansing's Octiv Stage MP450, which retails for about the same price but can now be found on Amazon for $70. We prefer the Altec's simple styling, but it should be noted that some users have complained of the swiveling arm breaking on the Octiv Stage after extended use (I haven't had a problem with my review sample, however).
Another more affordable option is the Logitech Speaker Stand for iPad, which is available for as little as $39. If all you're looking for is an iPad charging option with sound that's a step up from the iPad's internal speakers, that model is worth considering. But if you're looking for better--but not spectacular--sound quality, the OnBeat is going to be the better choice.
While I wasn't in love with the design of this JBL product, its sound quality is decent for its size, and the OnBeat makes for good nightstand speaker dock/charger for your iPad that can be easily moved around the house. Yes, it also supports the iPhone and iPod Touch, but I'd say the only reason to get it is if you have an iPad or iPad 2--and you're OK living without landscape iPad viewing.
In terms of value, it's an OK deal at around $120 online. Not a bargain, but reasonable enough considering its feature set and sound quality.