Hi just browsing this morning and found these sites you may be interested in:

http://www.turkishculture.org/

online Turkish lessons with audio:
http://cali.arizona.edu/maxnet/tur/

A site with grammar explained:
http://www.turkishlanguage.co.uk/

http://www.turkishmusic.org/

http://www.ilovelanguages.com

http://turkeytravelplanner.com

Erdinç is already compiling a list of website in this thread!

You might like to repost there any that aren't already included.
Although I suspect Erdinç will see them here soon enough

Thanks Beany, this was very helpful.