Cs 1.6 Knife — Skin Pack ((link))
He burst from the smoke like a demon. The first Terrorist saw only the spinning curve of the Karambit before it opened his throat. The second tried to back away, but Spider lunged, stabbing upwards into the ribs. The third pulled out his own default knife, a pathetic, straight blade. Clash. For a split second, the blades met. Sparks flew. Spider feinted, spun, and drove the Karambit into the third man's chest.
Then he saw the message in the chat.
And stopped breathing.
He refreshed his inventory. Nothing. He reconnected to the server. Nothing. Cs 1.6 Knife Skin Pack
And somewhere, deep in the server's broken code, in the corrupted cache of a mod he'd downloaded from a sketchy Romanian forum three days ago, the Karambit waited. Patient. Hungry. Ready to spin again. He burst from the smoke like a demon

Weird how the US never got these commercials despite being filmed here. Guess they hear assumed it was too weird for American sensibilities. Personally, I love it.
I think Pepsiman was also in the Japanese version of the Saturn port of a fighting game called Fighting Vipers as well.