The incessant clamor for more Mahler is beginning to effect my nerves unbearably. Alright, already. If the Adagietto from no. 5 doesn't quiet you down, I don't know what will.
But we have some options here:
The Adagietto with no frills, just a photo of Mahler to stare at. But unlike the clips below, it has the whole movement.
The Adagietto as background music to a nice monochrome video presentation dedicated to London. But it is only an excerpt of the movement, and cuts off the last half rather brutally (I thought).
The Adagietto as background music to a rather spectacular video presentation of Gustav Klimt's art. (Content Warning) Also a bit clipped at the end, but only a bit.
The Adagietto was also famous as the background music for Visconti's film adaptation of Death in Venice (a ponderous, glacial and somewhat over-rated flick, in my Philistinian opinion).