Alcoa and WD-40 will kick off this year's earnings after the bell today, with growth on investors' minds. Can Alcoa top its big start to '14? TheStreet probes Pandora's plummet--with earnings later this month and a potential boost from Spotify's looming offering, is it time for the streaming music site's shares to change their tune? And Jim Cramer makes a pick we've all made at the mall--tune in for today's Action Alert Pick. Thursday, April 8, 2014.