Quirky people are, indeed, fascinating. Just add incredible talent, energy and humor to that formula and what you have is Puerto Vallarta's newest arrival, Sharron Matthews.  With a fabulous singing voice, a slightly irreverent sense of humor and a theatrical,  flamboyant wit, Sharron  Matthews is a wonderful new addition to Puerto Vallarta's entertainment scene this season.  Jokingly described as 'the love child of Jack Black and Bette Midler,' Sharron brings her two different 'Solid Gold Hits' shows to The Red Room, Act II Stages from January 5th to the 30th.  Her cabaret shows include songs by artists such . . .