With ticket prices that can veer to $142.63 (plus food and beverage charges), a visit to Feinstein's at Loews Regency might be advisable only if you've just sold off your entire Playbill collection. But for nostalgia freaks, it's worth it for the good sound, lack of snootiness, and overall high-quality experience, whether it be a star like Brooke Shields trying out cabaret material, a newish but seasoned singer like American Idol runner-up Melinda Doolittle belting love songs, or a treasure like club queen Marilyn Maye radiating star power that makes even familiar material by Lerner and Loewe and Sondheim sound newborn. When the attraction is an even bigger Jeopardy answer, like a Mitzi Gaynor or Joan Collins, the action is moved to the ballroom, where they can sit more people. But the traditional Feinstein's room is the best for cozy cabareting, especially when Michael Feinstein himself is duetting with Broadway legend Barbara Cook in between Cook's bitching about how Catherine Zeta-Jones didn't deserve the Tony! 540 Park Avenue, 212-339-4095, feinsteinsattheregency.com (10065)