Yes, using func_hinge.
You simply hang it up atatching it to the side of the "door hole" and it will swing right open for you when you poke on it.
I'm not sure about the name though. (func_hinge)
Anyway, when you see the properties infront of you, you will figgure it out.
Edit:
Also, slasher_101 once showed me that this hinge door is great when you want to make a breach (similar to my example map)
The door will blow open and then smash in to the wall and bounce back, awsome effect really.