In this segment from Wednesday's Investor Beat, Motley Fool analysts Bill Barker and Jason Moser each look at one stock they'll be watching closely this week. Bill looks at Costco (COST 0.23%) and discusses why it will make a good barometer when it reports earnings tomorrow for how this year's exceptionally severe winter weather affected retailers as a whole, while Jason will be watching Craft Brew Alliance (BREW), a small brewer with a lot of big connections.