Wow. There are quite a few good ones around at the moment, good luck!

http://thechainnail.blogspot.com/2010/02/50-followers-giveaway.html#comments

The Chain Nail is giving away loads of nail stuff!

http://paintedladyfingers.blogspot.com/2010/02/for-love-of-manglaze-giveaway.html

Painted Lady fingers is giving away Man Glaze Polishes. Nice :)

http://wearefishandwedrown.blogspot.com/2010/02/50-followers-giveaway.html

We are Fish and We Drown is also having a giveaway!

New: Romika's Nails are doing a giveaway but this is only open until 11:59 TODAY! 14th of March! So seriouly, I implore you to get a move on :P

http://romikanails.blogspot.com/2010/02/100-followers-never-thought-of-this.html