on any type of expensive proprietary hardware and high ticket items (laptops/lcd monitors/home theater setups/plasma tv's) i would definitely pick up a PSP type plan. the BB PSP does NOT cover abuse(breaking it to get a better model) and accidental damage (running over it with a car/dropping it/cracked screen). it DOES cover power surges, dust, heat, humidity(not something dropped in water though), dead pixels, replacement batteries, regular use, and normal wear and tear(don't ask me why it is listed like that)
The BB PSP is also international (take your laptop on vacation or move to another country) and BB covers all shipping and repairs without an additional service charge.
If it cannot be fixed the PSP will allow a new item to replace it that is comparable to the defective one. if you have no problems with that laptop but in 2.9yrs it breaks, BB will replace it with a comparable model at the time. (it can be, depending on who you talk to, be used as an unofficial upgrade policy. especially in the case of a laptop that is no longer manufactured and needs to be replaced because you have a 3 year PSP on it...........
on a side note for laptops, not all manufacturers consider 1, 2, or even 3 dead pixels on a laptop a defect, just a normal part of the manufacturing process. BB will replace it if there is a single dead pixel anywhere.