You can fly using the Paralyzer

[speedmetal890]

means no Lenny no doors quite fun.

http://youtu.be/EqQwtiVgjaM

[Silentcrisis]

Just tried it out, it's true. I thought this gun was OP already...

[Megaton A]

Not really OP since you can get into the Gun Shop, General store, over to the church/mansion area, into (but not out of) the saloon, the candy store, and I'm almost positive the bank... petty much anywhere except for inside of the church and haunted house and maybe the courthouse normally without having to knock down any debris, use this gun, or buy any doors. Just a matter of learning the tunnels.