So I've been slowly but surely working my way through the thank you cards, but I have to admit it has been a serious headache in trying to figure out how to say "thank you" properly and without sounding like a robot/Hallmark card. However Google came through for me again with this awesome site. It's not perfect, but has helped to create the foundation to my words of thanks.
Hope it can help someone else too. 
http://www.my-thank-you-site.com/wedding-thank-you-a-to-z.html