What are some useful TextMate shortcuts?

Macs are renowned (or bemoaned) for having an extensive number of shortcuts. However, OS X itself pales in comparison to the shortcut lists in TextMate and its bundles.

What are some useful keyboard shortcuts you use?

These are my favorite shortcuts:

• cmd+t Start typing name of a file to open it
• ctrl+w Select word
• cmd+r Run the ruby or php-script that is open
• cmd+opt+m Define a new macro
• cmd+shift+m Run the macro
• opt Switch to vertical selection mode
• cmd+opt+a Edit ends of selected lines