As others have said, the actual remote control is not exactly a work of art - badly designed and unresponsive, which really makes you think of it as being next to useless. However, that's not why you ought to buy this - you ought to buy this for the IR dongle that you plug into your PS3 and to use the rubbish remote once (and only once) to program your universal remote so that all of your kit is still controlled via a single remote.
As it turns out one of my universal remote's in-built set of IR codes for a Sony DVD player actually worked all of the transport commands (play, FF, chapter+-, etc), and all I had to was teach it the cursor control and a couple of others - the whole process took less than 10 minutes and the Logic remote is now buried in a drawer. The universal remote also now works the main PS3 menu screens, so as long as the PS3 is turned on you can browse through the menus, go to the PS3 store, etc., all from the comfort of one remote control