Runs Ubuntu mostly - very smoothly. Upgraded to latest 12.04
Also has a Windows installation [but I haven't used it much]
Bought in early 2009.

Recently replaced keypad, because some of the keys were less responsive than before.
Webcam doesn't work. Can throw in an external webcam for free.
Has a sticker of 'Facebook', which I got at a career fair. Makes it look quite cool frankly.

SPECS:

Processor, Operating System and Memory
Operating system installed
Genuine Windows Vista® Home Premium 64-bit with Service Pack 1
Processor
Intel® Core™ 2 Duo Processor T5550
• 1.83 GHz, 2MB L2 Cache, 667MHz Front Side Bus
Standard memory
4096 MB
Memory type
DDR2 System Memory
memory layout
4096 MB (2 x 2048 MB)
Internal drives
Internal hard disk drive
250 GB
Hard disk controller
SATA Hard Disk Drive
Hard disk drive speed
5400 rpm
Optical drive type
LightScribe Super Multi 8X DVD±R/RW with Double Layer Support
System features
Memory card device
5-in-1 integrated Digital Media Reader for Secure Digital cards, MultiMedia cards, Memory Stick, Memory Stick Pro, or xD Picture cards
Modem
High speed 56K modem
Network interface
Integrated 10/100BASE-T Ethernet LAN (RJ-45 connector)
Wireless Technologies
Intel® PRO/Wireless 4965AGN Network Connection & Bluetooth ™
Wireless capability
Yes
External I/O ports
3 Universal Serial Bus (USB) 2.0, 1 Headphone out, 1 microphone-in, 1 VGA (15-pin), 1 TV-Out (S-video), 1 RJ-11 (modem), 1 RJ -45 (LAN), 1 notebook expansion port 3, 1 IEEE 1394 Firewire (4-pin), 1 Consumer IR
Video capture interface
IEEE 1394 FireWire® Interface
Expansion slots
One ExpressCard/54 slot (also supports ExpressCard/34)
Display size
15.4” WXGA High Definition BrightView Widescreen
Display resolution
1280 x 800
Video adapter
Intel Graphics Media Accelerator X3100
Video RAM
Up to 358MB Total Available Graphics Memory
Control Panel
HP QuickPlay media player software and its dedicated menu controls, music and DVD buttons
Webcam
HP Pavilion WebCam with Integrated Microphone
Handheld remote control
HP Mobile Remote Control
Internal audio
3D Sound Blaster Pro compatible sound 16 bit integrated
Speakers and microphone
Altec Lansing® speakers
Keyboard
101 key compatible keyboard
Mouse/Pointing Device
Touch Pad with On/Off button and dedicated vertical Scroll Up/Down pad, volume control, mute buttons, 2 Quick Launch Buttons
power supply type
65W AC Adapter