Having recently redesigned the site – I wasn't really intrested in trashing it and starting fresh. It wasn't really that difficult to switch the template over. (I'm still tweaking it a little bit, but I'm very close!)
Basically, I just copied my template into a text editor and swaped the MT tags for the WP equivalent. In some cases using a simple find and replace. (Like for permalinks and post ids)
Here's some very useful links I've been referring to A LOT:
Moving from MT to WordPress
(I already linked this – but it's so useful, it's worthy of being linked again. While I move my blog over, I've gone to this page so many times I lost count. Maybe I should just make it my home page when I start up my browser! LOL!)
MT tag vs. WP tag: Volume 1, Volume 2
Linked to from that Carthik.net Article
Template Tags (wordpress wiki)
I should add that one of the coolest things I like about wordpress is how easy it is to create and add plugins. I suspect that a lot of my "tutorials" will be reduced to – Here's the plugin – load it, and you're good to go. LOL! YAY WordPress!