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.
![:)](http://192.241.182.11/images/smilies/smile.png)
I'm not sure about the name though. (func_hinge)
Anyway, when you see the properties infront of you, you will figgure it out.
![;)](http://192.241.182.11/images/smilies/wink.png)
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.