Last 4 teams in NBA playoffs among cities with longest championship droughts

During TNT's postgame show following Game 3 of the Eastern Conference Finals, Ernie Johnson and company provided viewers with this interesting graphic:

As indicated in this list, all four teams that remain in the conference finals are linked together in a way that may dredge up painful memories for fans and/or residents of Cleveland, Oakland, Houston and Atlanta.

Let's recap each city's championship drought, in order of least to most painful:

• Atlanta (20 years) - The Falcons have never won a Super Bowl, the Hawks have never hoisted the Larry O'Brien Trophy (prior to their move to Atlanta, the St. Louis Hawks won the title in '58), but the Braves beat the Cleveland Indians to win the Commissioner's Trophy in '95.
• Houston (20 years) - The Astros were swept by the Chicago White Sox in their lone appearance in the World Series in '05, the Texans never reached the Super Bowl, but the Rockets won their second consecutive title in '95.
• Oakland (26 years) - The Golden State Warriors came out on top in '75 (other Warriors titles came in '47 and '56 when the team was based in Philadelphia), the Raiders were champs four times ('76, '80, '83 and once before the AFL/NFL merger, in '67), but the most recent title for the Bay Area came in '89 when the Athletics won the World Series (prior to that, they had won eight other times, dating as far back as 1910)
• Cleveland (51 years) - Often cited as the most championship-starved city in North America, no Cleveland-based pro sports team has won a title since the Browns did so in '64. The Indians captured glory in '20 and '48, but the Cavaliers came up short in the Finals in '07.

With the Warriors and Cavs seemingly on the verge of a Finals match-up, one of these droughts is bound to become a thing of the past.