Who played Al Borland in 'Home Improvement'?

Who played Dylan McKay in 'Beverly Hills, 90210'? Who played Philip Banks in 'The Fresh Prince of Bel-Air'? Who played Carlton Banks in 'The Fresh Prince of Bel-Air'? Who played Tim "The Tool Man" Taylor in 'Home Improvement'? Who played Cory Matthews in 'Boy Meets World'? Who played Topanga Lawrence in 'Boy Meets World'? Who played Mr. Feeny in 'Boy Meets World'? In which TV series is Mr. Feeny a main character?