Is there anything I should check for before taking delivery of the car?

Thanks!

Scratches/dents/make sure any optional extras asked for are there/check all the door windows by winding them down then up to see if they come back up wet on the inside/make sure everything works properly lights etc.
 
I think taking a friend along is good advice. If their a good friend they wont let your heart rule your head!!
 
take camera for pix if problems maybe?

take your time to test everything - even under the seats - my 2nd hand one was cleaned yesterday sir etc etc - BUT nails and bits of plaster under spare tyre and muck under rear seats = not happy bunny = so do take your time to check it., How long did it take to look, test-drive, haggle and buy? Mine was over an hour - so maybe take a long look without feeling guilty as it's usually a lot of dosh to spend and then to find mistakes later... oh yes, I also found a screw in the spare tyre........