Here's a quick Textmate command I made to open the file you're working on in BBEdit:

#!/bin/sh

# Open the current file in BBEdit bbedit +$TM_LINE_NUMBER $TM_FILEPATH

I created it as a command, with options "Save current file", Input: "Entire Document" Output: "Discard" and I added the F8 shortcut I put this in the scope selector: source.php, source.css, string, text.html, text.csv, text.plain

I made it after Maarten Sneep made an "open in textmate" on the google bbedit list. Maybe someone will find it useful.

Here's my original post with the opposite script (which unfortunately has a habit of locking textmate randomly every once in a while) http://groups.google.com/group/bbedit/browse_thread/thread/7de49fa457826f3c

Nevan