As for bars, it depends on what you're looking for. Currently, I love High Street, in the Pearl, for an excellent menu of wines, champagnes and craft beers (no liquor), and they also serve small charcuterie plates. I enjoy Paramour for the same reasons. If these are a little too snobby for your tastes, or if you prefer "dive bars" or local hangouts, I sugfest The Hangar on Broadway or Oak Hills Tavern or The Highlander on Fredricksburg Road. Cooties, just off Jones Maltzberger, also has a laid back vibe and I've rarely seen the barely 21 crowd there.
Speaking of martinis, as you mingle in various clubs you want to find a connection who can wrangle you an invitation to The Martini Party. It’s an annual event, and features the finest collection of dolled-up MILFs (many single and on the hunt) in town.