Just to clarify, there are several different types of locks, each of which require their own set of skills (and tools) to pick. The Wiki-how link is for a standard pin-tumbler lock, the kind used on most houses, and cheaper bike locks. Depending on the skill set of the lock-picker and the quality of the lock, it can take anywhere from about 5 seconds to a half hour or more. I'm not a terribly good lock picker myself, but I can get through a standard Kwikset, like the one on my front door in about 30 seconds. Most people who can pick locks can only pick these types of locks.

The old Kryptonites that you can open with a bic pen used a different type of lock entirely; they used a Tubular pin-tumbler, which, ordinarily are a real pain to pick using conventional tools. Despite the Bic incident, they are still pretty secure (Generally speaking, Kryptonite just got unlucky), which is why you see them on vending machines, pay phones and slot machines. The tools needed to pick these are expensive and difficult to use (usually).

Most modern U-locks (at least that I've seen) use a different system again, now that people have lost faith in the Tubular pin-tumbler. Both Kryptonite and On-Guard, as well as Abus use Disc Detainer locks. They are a real pain in the ass to pick, and I don't think there is any nice workaround using stationary. They can be picked, but it again requires a lot of skill and a lot of time.

If you have a Kryptonite key, take a look at it; notice that line of numbers on the handle? That's the code that opens your lock. All someone needs to steal your bike is that code. Granted, no casual thief is going to go to those lengths, but a dedicated thief after your bike would just need a quick look at the keys to have his own copy made.