Once again, Chargrilled T-shirts are doing an advent calendar. Every day, they are going to be doing 1 specific t-shirt at a £5 discount. You also get free delivery which is very handy. This will start on the 1st of December 2008.
I've ordered from Chargrilled.com quite a few times. Their tees are very good quality, quite thick material, and they wash well too.
Don't forget that quidco give you a massive 20% cashback too.
I'll try and post the new tees in this thread every day. They do have some funny ones, so hopefully they'll have a good selection!
I'll link the discount codes above as well - hopefully the 10% discount will work on your orders too - I know that it has done in the past, discounts also apply to sale items.