This has been done, but I was watching NFL.coms greatest plays countdowns again and the Jags only have one or two representatives anywhere in the countdown clips so....
"Wide Left" Jags won 17-16 over the Falcons in the last week of 1996 en route to becoming AFC runner-up as a second-year team
"The Run" Mark Brunell pulls the longest run by a Jag QB, 38 yards, in the playoffs on a drive capped by a Jimmy Smith TD catch Jags win 30-27
"The last Run at Three Rivers" In a sad 2000 season, Fred Taylor runs for his 4th TD in the greatest rushing performance ever at Pittsburgh, 234 yards, and the Jags win with 4 rushing TDs and two safeties by Emarlos Leroy
"Scobee's Shocker" Rookie Josh Scobee kicks a 53 yard FG as time expires and for the first time, Jags win at Indianapolis13-102005-present
"Running of the Cats" On the second play from scrimmage, Fred Taylor runs to the right for 76 yards, followed by a Maurice Jones-Drew 18 yard TD run as the Jaguars dominate the Colts, rushing for 375 yards, en route to a 44-17 victory
"The Run II" David Garrard runs for 32 yards on 4h-and-2 as the Jaguars kick a FG with 37 seconds left Wild-Card versus PITT 31-29; in which Fred Taylor sets Heinz Field's rushing record, MJD has the longest non-TD play in Playoff history, JAC wins twice at PITT in one season, and Roesthlisberger throws 3 picks
"Colt Slayer" Josh Scobee again kicks a FG as time expires and the Jaguars beat the Colts at Lucas Oil Stadium 23-21 again, providing one of the few highlights in a sad 2008 season