Very important!!! Not only do you want pictures but also make darned sure you get the serial numbers off your bikes!!! Register them with your local police, too, if they have that sort of program. Talk to your insurance company about what is and isn't covered and when.
One of the guys around here had his road bike stolen out of the back of his pickup camper. His auto insurance did NOT cover the $4,000 loss. I don't know if it was because the truck was parked in front of his home?? His wife wouldn't let him claim the bike on her homeowners either (bad word here). Luckily for him someone saw the bike on Ebay and let him know. He contacted police and they did find his bike. Unfortunately all he had was pictures-no id numbers and the police were not going to let him have the bike back without it. Fortunately he had a really odd setup on his bike that wasn't stock and very unusual to see. After talking to Trek, the shop he bought it from and the local shop where he'd just had the bike repaired the day before it disappeared they did decide the bike was his after all. YAY!!
Anyway, cover your butts well, ladies!
I used to have an open mind but my brains kept falling out.