How can you skip the intro sequence in Portal 2?

Looking at the ceiling and floor and art is exhilarating and all, but if I want to just skip to the gameplay on future playthroughs rather than listen to Wheatley for those couple minutes, is there a way to do that?

I'm afraid the only way to do so is restoring a save point after the initial intro. If you make a save file from the menu, it will not be automatically deleted from the game.

Open the developer console (with ~, after enabling it in the options), then enter the following command:

changelevel sp_a1_intro2

or wherever else you would like to start. If you're not currently in a game, you might need to use the map command to start one (i don't quite fully understand the difference)

map sp_a1_intro2