The DrupalCon Los Angeles website lets you add sessions to "My Schedule", but unfortunately it doesn't allow you to export those to your own calendar with iCal. This morning I wrote a Greasemonkey script that lets you export .ics files for sessions and BoFs. Unfortunately, you still have to do them one at a time, but it's much faster than typing them in.

Download the script here (it's a text file, so copy and paste it into Greasemonkey as a new user script)

The script uses a version of ics.js that I modified to make all the events show up in PDT time zone.

Once you add the script to GreaseMonkey, an [iCal] link will show up on session pages right next to the date and time of the session. Click the link to add the session to your calendar.