LeBron James is now the NBA's all-time leading scorer.  The Lakers' star overtook Kareem Abdul-Jabbar for the top spot during Tuesday's game against the Oklahoma City Thunder in Los Angeles.  Abdul-Jabbar posted more than 38-thousand career points and previously held the record for nearly 40 years.  James is in his 20th NBA season and his resume includes four championships, four regular season MVP awards and 19 All-Star appearances.  Earlier this season, he moved into fourth place on the league's all-time assists list.