9. Marcus and Mike's Introduction (Bad Boys)
The opening scene in Bay's buddy cop classic Bad Boys introduces us to cops Mike Lowery (Will Smith) and Marcus Burnett (Martin Lawrence), as they cruise around in Bay's own Porsche 911 and soon enough begin arguing, which completely sets the tone for not just the film, but the series as a whole. After a super-hot woman distracts them further, they end up with two armed carjackers wanting to pinch their wheels, yet they just keep arguing. It's a hilarious scene that demonstrates Smith and Lawrence's sure chemistry from the outset, which is easily the best thing about these two films.