just a quick note about hamster hole...the Ts do have a couple of spawn points upstairs inside the building. If they rush out the door as soon as the round starts they can usually be waiting at the top of the outside stairs before the CTs can get up there. There is also a set of stairs outside on the T spawn side of the map that goes up to the upper level of the building that you can jump up to the roof from.
someone last night accused me of speed hacking when I was T because I got the upstairs spawn point right by the door so I charged out and jumped down into CT spawn as soon as the round started