Definitely not recommended for anyone reading this, but fascinating reading nevertheless is iFixit's teardown of the Nokia N8, with numerous valuable insights into how the N8 was made, including titbits like the AMOLED display not being fused to the outside glass so that, in theory, you don't have to replace both if you break the latter. Details of the various chips inside are also of interest, though I'd warn again - do not try this at home. Leave N8 dismantling to your local Nokia Care Point!
Nokia N8 Repairability: 8 out of 10 (10 is easiest to repair)
The battery, although considered by Nokia not to be user-serviceable, can be easily removed.
The AMOLED display easily comes apart from the glass, which means that you can replace the glass and the display independently.
There are mostly mechanical fasteners, and very little glue inside.
You still have to use a heat gun to remove the front glass, but at least you're heating up metal that won't deform as easily as plastic.
You can't remove either of the cameras from the phone.