The PS3 is the superior console, but the 360 has its perks:

360 advantages:
- Some titles get ported a little earlier
- Some games look a little better (DirectX vs PS SDK)
- Has a few more exclusive titles
- About $50-$100 cheaper
- Best online community
- More players
- Arguably better controller
- Kinect is a gimmick, but its still an option

PS3 advantages:
- Bluetooth means cheaper, generic and much much more accessories
- Online gaming is free (unlike Xbox)
- It plays BluRay
- A few exclusive titles
- The hard-drive can be removed, replaced, upgraded (even to SSD)
- More content can be saved and played off the console (eg Movies in HDD)
- It can browse the internet (and so becomes a "Smart TV")
- Record TV
- PS Move is a genuine "body motion sensor" with less hassles
- Backwards compatibility with select models
- Linux support on [very] old version consoles