OKay try this: (videos are included so you could see)
1, Heat the dent up with a hair dryer (gas will expand and it might just pop itself back out)..leave the door in the sun for a while (we are having a heat wave right now so keep it in direct contact with the sun - the gass expands and it might just pop out). The add CO2 (it works on dents that are fairly big) Once you finish heating the surface you spray on the CO2; voila creases go away. This doesnt damage paint. - - - dont forget to hold the CO2 can UPSIDEDOWN!!!! AND once you clean the surface you should use some polishing compound and wax to throughly clean the surface!
http://www.youtube.com/watch?v=gZwBLUxjqhg
2. Use one of those "tv promotional" dent removers. It uses suctiong cups ont he side to anchor itself to the door and basically pulls out the dent.
http://www.youtube.com/watch?v=SdVpvL_FpoQ
Try it out and let me know

GL
BTW Im in LA as well...so maybe I could help you try it out of you want! LOL! I would love to see if it will work for this dent.