1. Pop 2000 Tour
The Pop 2000 Tour is hosted by Lance Bass of NSYNC and includes performances by O-Town, Aaron Carter and Ryan Cabrera.
7:30-10:30 p.m. $33-58. H-E-B Center at Cedar Park, 2100 Avenue of the Stars, Cedar Park. 512-600-5000. http://bit.ly/Pop2000B
2. Old Town Street Festival
The annual festival features the Old Town 5K, vendors, food trucks and music by headliner Doug Stone and LC Rocks. Parking is available at the Leander ISD lots and Capital Metro Park & Ride.
All day. Free. Old Town Leander, 100 N. Brushy St., Leander. 512-259-1907. www.oldtownstreetfestival.com
3. Motorcycles for the Military
Lakeline Village is hosting a Motorcycles for the Military event benefiting PTSD Foundations of America. The bike show will have a DJ and food trucks. Attendees can vote on their favorite motorcycle, and winners receive awards. The organization asks that those who register their bike make a donation.
10 a.m.-2 p.m. (registration begins at 8:30 a.m.) Free. Lakeline Village, 12617 Ridgeline Blvd., Cedar Park. www.eventbrite.com/e/motorcycles-for-the-military-tickets-60193182429
4. Adopted dog reunion
Texas Humane Heroes adopted alum gather at Dog House Drinkery & Dog Park. Attendees can drink beer while their dogs meet up with former litter mates.
Noon-4 p.m. Free. Dog House Drinkery & Dog Park, 3800 CR 175, Leander. 512-260-3602. www.humaneheroes.org
5. Church SpringFest
The St. Margaret Mary Catholic Church SpringFest has live music, bingo, pony rides, games and food.
6 p.m. (May 18) and 11 a.m.-4 p.m. (May 19). Free. St. Margaret Mary Catholic Church, 1101 W. New Hope Drive, Cedar Park. 512-259-3126. www.stmargaretmary.com