Vim commands every programmer should know

I'm at a plateau in my learning curve with Vim; I grasp all the basic concepts but find it difficult to fit more advanced commands into daily usage.

Lately I have a Vim cheat sheet next to me (PDF: http://www.digilife.be/quickreferences/QRC/VIM%20Quick%20Ref...), regularly dig through :help and idle in #vim on Freenode.

But I still find it to be a steep learning curve even after I think I understand Vim.

Any other suggestions on what to do to keep the learning process going?

Edit: Also, looking through other .vimrc files is extremely helpful - http://dotfiles.org/.vimrc

Not saying that there aren't some good commands in there but a lot of vim's and emacs beauty comes from being able to string commands together to produce results. Knowing why the patterns do what they do is much more useful.

Would have been far more useful to give 100 common commands individually and point out whether they're compatible with movements, etc. Also, reading the post before hitting "publish" might have helped weed out the dozens of typographical errors.

On a similar note, I'm at a point now in my Vim usage where I know all (or most) of the commands given in the post, but would like to learn more without paging through :help. I feel like coming up with some kind of tiered Vim tutorial structure; there are "cheatsheets" missing between the common ones and the "time to read :help" step.