Thank goodness for Wikipedia. Because of Wiki there's an easy place to find information on all the NFL players suspended by the commissioner under the league's personal conduct policy.
Since Goodell took over in August 2006 he has punished:
Adam Jones - entire 2007 season
Pacman's various acts of foolishness, culminating with the making it rain strip club shooting, cost him a whole year.
Chris Henry - 8 games
Henry's crimes weren't as severe (DUI, drugs and sex acts with minors) or frequent as Jones'... but that's like saying GM isn't as screwed as AIG. Both fucked up. He was later released by the Bengals only to be resigned by Cincinnati. Henry performed poorly last season and is looking to rebound... along with pretty much everyone else on that team.
Terry Johnson - 10 games
"Tank" had a long history of weapons problems prior to his guilty plea on a misdemeanor charge for illegal possession of handguns. Less a month after the June 2007 suspension was announced the Bears released Johnson. He found a home with the Cowboys and then later the Bengals.
Michael Vick - indefinite
I think you may have heard about this.
Adam Jones - 4 games
Jones was traded by the Titans to Dallas during the 2008 NFL Draft. Like any real Cowboy he found trouble. In October Pacman got into an altercation with his bodyguard. Due to his previous transgressions Jones was suspended once again by Commissioner Goodell. After the 2008 season he was released.
Donté Stallworth - indefinite
In March a drunk Stallworth struck and killed a man with his Bentley. He plead guilty to DUI and manslaughter charges and served 30 days in jail. Additional penalties, including a lifetime suspension of his driver's license, have been levied to the Browns receiver. There is no indication he will be reinstated in the near future.
Now as a free Vick awaits his impending suspension it'll be interesting to see how long Goodell punishes him. Sources say the artist formerly known as Ron Mexico will be sidelined between two and six games -- that is, if any NFL team actually takes the on and off the field risk of signing him.