St. Kieran’s Church is holding its annual Irish Food Festival all this week. Father O’Riordan promises that potatoes will be prominently featured.

The Lawrenceville Street Art Collective will be etching happy faces in the pavement of 43rd½ street all afternoon Wednesday. Traffic will be diverted to 43rd Street and 44th Street.

Can you paint? The new Pittsburgh Regional Transit (Web site: invites the public to a Paint-In at the South Hills Village car barn Tuesday evening from 5 to 9:30. We’re never going to get all those trolleys repainted without your help. Bring the kids! Our new logo looks like a third-grader designed it anyway.

The North Hills Ragweed Club will be sponsoring Ragweed Days in the Park all next week at North Park. Last year’s attendance was disappointing, so we’re appealing to all native-plant lovers to spread the word and help us celebrate this underappreciated wildflower. This year’s events are generously underwritten by a $75 grant from the makers of Clairitin.

If you’re looking for something to do in your spare time that’s fun and exciting and could bring in some extra cash, your local mob needs part-time arsonists. Flexible hours. Apply in person at Krzrnski’s Café. Ask for “Junior.”