Eric Cantona, Manchester United - £1.2m from Leeds, 1992
Manchester United have undoubtedly been the dominant force of the Premier League era, and they kicked off that dominance by plucking maverick French star Cantona from rivals - and then champions - Leeds for a bargain fee in 1992.
He's go on to win four league titles, and achieve iconic status at Old Trafford.
Patrick Vieira, Arsenal - £3.5m from AC Milan, 1996
Arsene Wenger wasn't yet in charge at Arsenal in the summer of 1996, yet you could detect his fingerprints all over this signing of the 20-year-old Vieira, who would go on to dominate the midfield at Highbury for just shy of a decade.
A serial winner, he was arguably the best central midfielder in the world for a spell either side of the turn of the century.
Frank Lampard, Chelsea - £11m from West Ham, 2001
It is amazing to think that Frank Lampard ever had doubters, but there were more than a few around when Chelsea forked out £11m for his services way back in 2001.
He'd go on to become the club's all-time top goalscorer, a three-time Premier League champion and a Champions League winner.
We've no idea what those doubters are doing now, mind.
Cristiano Ronaldo, Manchester United - £12.24m from Sporting Lisbon, 2003
When Manchester United famously took on Sporting Lisbon in a friendly in the summer of 2003, they can't have known of what they were about to uncover.
A teenage Cristiano Ronaldo was so good against Alex Ferguson's men that the Red Devils simply had to sign him, and the rest is so much of the club's history.
Thierry Henry, Arsenal - £11m from Juventus, 1999
Once a struggling winger at Juventus, Thierry Henry was plucked from Turin in 1999 by Arsene Wenger and he went on to achieve legendary status at Arsenal.
The Frenchman is the Gunners' all-time record goalscorer, and these days he's got a statue outside the Emirates.
Dennis Bergkamp, Arsenal - £7.5m from Inter Milan, 1995
Wenger is obviously credited with changing the way that Arsenal thought, acted and played, but in many ways the Dutch star Dennis Bergkamp was a forerunner to that.
Arriving a year before Wenger, Bergkamp set the standards at the club that others strived to live up to.
Sergio Aguero, Manchester City - £38m from Atletico Madrid, 2011
Sure, he was expensive, but Manchester City were buying their way to the top table when they snapped up Sergio Aguero from Atletico Madrid in the summer of 2011.
He went on to score THAT title-winning goal at the end of his first season, and won the league again two years later.
Roy Keane, Manchester United - £3.75m from Nottingham Forest, 1993
A then British record transfer, Irishman Keane became a vital cog in Alex Ferguson's Manchester United machine when he joined from Nottingham Forest.
The combative midfielder took no prisoners, with his twin qualities of drive and passion proving vital to United's success.
Philippe Coutinho, Liverpool - £8.5m from Inter Milan, 2013
This looks like more and more of a steal with every passing year, and the capture of Coutinho (along with Daniel Sturridge) was certainly Brendan Rodgers' best piece of business during his time at Liverpool.
The Brazilian has blossomed to become the star of the current Reds side, and if they were to sell him now they could probably get ten times what they paid for him.
Pablo Zabaleta, Manchester City - £6.45m from Espanyol, 2008
For all of their many, many millions, Manchester City probably did their best business in the Premier League era in the summer of 2008, when right-back Zabaleta came in alongside Vincent Kompany.
A fan favourite at the club, the Argentinean won two league titles before leaving for West Ham this summer.