A few favourite restaurants:
Les Philosophes, my favourite local bistro, Marais
Miznon - vegetarian Israeli street food, Marais
MaoDumpling - in the 3rd. order the eggplant
Big Love Trattoria - in the 3rd
Breizh Café - proper crêpes from Brittany, multiple locations
La Taverne De ZHAO, best noodles ever, multiple locations
The Terrace at Galleries Lafayette, casual rooftop dining, in the 9th
Treize au Jardin, amazing brunch/lunch, in the 6th, next to the park
On my list to check out:
Tekés Restaurant - Incredible!
Fellows - pasta!
Peppe Paris - best pizza in Paris?
Museums, etc:
Entertainment: