The 90s are making a comeback, folks, and MLB teams are right in the middle of it. One week after the San Francisco Giants starred in a Full House parody video to promote Full Clubhouse day on Sept. 30 , the Pittsburgh Pirates have joined the fray with a video titled '(We are) Family Matters.' [ Yahoo Sports Fantasy Football: Sign up and join a league today! ] As history shows, TGIF is the universal acronym for "Thank God it's Friday," but those words mean different things to different generations. To older generations and perhaps even the new generation, it simply means the weekend is here and it's time to relax, celebrate or just enjoy being out from under the responsibilities and stresses of school or work. To those who grew up in the 90s, it might also mean sitting in front of the TV every Friday night and watching ABC's lineup of hit sitcoms that aired throughout the decade. Among them were the aforementioned Full House and Family Matters, the latter of which aired from 1989 to 1998. That's an impressive run in any television era, and thanks to endearing characters such as Steve Urkel, it earned a special place in the hearts of one generation, while gaining a whole new...