Bundles make TextMate as a super Editor, so if you love TextMate, you must love colorful bundles based on it.

I just find an interesting bundle to speed up your HTML/CSS coding, which is named as Zen Coding.

The core of this plugin is a powerful abbreviation engine which allows you to expand expressions—similar to CSS selectors—into HTML code. For example: div#page>div.logo+ul#navigation>li*5>a …can be expanded into:

The sytax is simple to understand, there is a sytax list here. You can also get more details about this bundle on its official site.

Enjoy it.