I gave my N95 to the wife.  It was either she has it, or it goes the same
way as every other toy phone I've given - either drop tested off cell masts
or buildings.
Standby time on the N95 is about 1 day with the wifi scanning on, and about
2 days with it switched off.
Expect considerably less standby time if you should need to make a call or
two.

I've had one for about a month. Quite like it in many ways - especially as
it has a better web browser than my previous phone. Battery life is quite
poor, however, so you really need to be somewhere near a car or mains
charger if you are out for more than a day or so with it. Not so bad if you
are simply using it for voice calls and texting but any web browsing, email
downloading, radio/music player operations, camera use, etc. soon start to
run the battery down. The GPS literally devours the battery so no good for
use on a long trek on foot or cycle.  I regret buying it in some respects,
but it's a nice gadget to play with!! The 5M camera is not as good as you
might expect, incidentally - doesn't always focus well (likes high-contrast,
brightly lit, subjects) and some shots, especially landscapes,  seem
distinctly blurred. The digital zoom is useless. I think it's proabably a
software (photo compression) problem to some extent.

Paul

I don't usually get more than a day and a half out of the battery.  It
was a real problem for me to get my head around but it's cured now.
Charge phone at night.  Use phone during the day.

I've plugged my spare charger in at work and when I'm listening to
music in the afternoon from it I will sometimes plug it in for a bit
if I know I'm going to be making some long calls in the evening.

While some people don't like it (and their views are very much valid
if the phone doesn't do it for them) I actually really love this
phone.  I've had mine for a good three or four months now so know my
way around it (not that it's complicated) and use pretty much all of
the features.

When I upgrade from it I'll get whatever the new version of the n95 is
but the n95 is going at the top of the 'great phones I've owned' list
along with the old Nokia 7110 and 6210.