That's a great point, @abgemacht. I think that's what I like about D&D, the versatility.
Our campaign is coming off several sessions of "town stuff" - lots of roleplaying, with a dash of an assassination contract - and now it's ramping up to what will likely be many hours of hexcrawling through orc territory, hunting for an artifact rumoured to be held by a shamaness leader - basically, lots of hack'n'slash. And before the town stuff, it was several sessions of gladiatorial fights... and before that, an extended chase scene in a wagon over the hills... and so on.
The ability to change pace, for stories to result from PCs doing hilarious/dumb/amazing things, the ability of the DM to ratchet up the tension a little bit here and there where necessary... that's what makes it the game it is. It's like a box of chocolates, I guess... you never know what you're going to get.
Anyhoo, my list of dirty tricks has grown considerably long, but I'll have to wait until later to post them... one of my players is a webdipper and prone to dirty tricks of his own...