In an attempt to address the conspicuous lack of feedback regarding Bucharest, here are some places well worth trying, in no particular order:
Rue du Pain (Piata Floreasca) - tasty french bakery manned by a genuine alsatian! Tasty brunches: Chicken Club, Beef Stroganof, Quiches and Soups all good. Some of the best eclairs I've had (and I had plenty!).
OSHO - (Primaverii) new steak house, specialized in dry aged meats. Excellent hamburgers.
Ici et la (Romana) french cook turning out solid gallic grub. Yummy steak tartare.
La Cocosatu (Baneasa) specialized in Romanian "sausages" called "mici" or "mititei" - a local legend.
Chez Marie (Icoanei) amazing marinated grilled meats (lamb, pork, chicken) called "pastrama", but other correctly prepared dishes as well
Capriciosa (Baneasa) excellent and well priced informal italian tratoria, good steaks fiorentina, home made pasta, etc
Grano (Dorobanti) best italian delicatessen. Fresh imported Buratta! Good wine selection.
Casa di David and Acqua (Herastrau) two super snooty italian restaurants serving well prepared standards. Great for people watching. Expensive.
Divan (old town) good Turkish. Mixed grill is a favorite!
Barka Safron (1 Mai) "expaty" bucharest classic, serving mostly indian food in a warm and friendly ambiance. A legend for some...
Picollo Mondo (1 Mai) In spire of the name, Lebanese restaurant described by a good Lebanese friend as "one of the best" outside of Lebanon. He's probably right.
Enjoy and have fun!