Everyone loves a good old group of death...well, everyone apart from the clubs that are actually in it.
They're wonderful entertainment for neutrals that are only really interested in watching the best of the best go at it. Things are far more stressful for the teams competing in the group as they look to navigate their way into the knockout stages.
The Champions League has produced some intriguing match-ups in round one recently, pitting European heavyweight against European heavyweight.
Here's a look at eight of the best the tournament has thrown up during its history.