Brentford new boys Deon Burton, Chris Hargreaves and Isaiah Rankin all scored on their home debuts in a seven-goal thriller against Doncaster at Griffin Park.
Martin Allen's summer signings twice came from behind against promoted Donny to the delight of a delirious home crowd and won 4-3 despite a late red card for Matt Somner.
Doncaster, aiming to make it three promotions in a row, could not have got off to a better start, thanks to a disastrous blunder from the Bees.
Defender Michael Turner, on loan from Charlton, collided with keeper Stuart Nelson after only four minutes and the ball squirmed free for Michael McIndoe to slide home.
The Bees fought back with 20 minutes of power football and they equalised when livewire winger Jay Tabb crossed for the stooping Rankin, signed from Grimsby, to head home.
It should have been the start of great things for the home side, but instead they hit the self-destruct button in the very last minute of the first half.
McIndoe was heading away from goal as he raced towards the corner of the penalty box, but Nelson hared out of his goal and hauled him down and a penalty was inevitable.
McIndoe converted it himself, but Doncaster weren't ready for Brentford's second-half onslaught.
Midfielder Hargreaves, signed from Northampton, made it 2-2 by thumping home a Burton knock-down after 52 minutes and former Portsmouth man Burton completed the comeback with a header from a corner two minutes later.
Brentford made it 4-2 when man of the match Tabb cleverly lobbed keeper Andy Warrington following a Hargreaves throughball, but Donny made it a nervous finale when the impressive Paul Green curled home a last-gasp goal to make it 4-3.
There was worse to come for the Bees when substitute Somner was ordered off for an ugly two-footed challenge just minutes after coming on the pitch. But the home side hung on for a dramatic victory to the delight of a delirious Griffin Park crowd.