110725 Atlanta; Atlanta Braves baseball players; Chipper Jones, left, Jason Heyward, center, and Dan Uggla are resembled in bobbleheads shown at Turner Field Monday night in Atlanta, Ga., July 25, 2011. Bobbleheads -- be they of sports stars, superheroes or advertising icons -- continue to gain popularity among fans and collectors. With the Braves scheduled to give away 20,000 bobbleheads of Chipper Jones at its game against the Pirates on July 28, we look at the phenom and give readers tips on collecting. Dan Uggla is the subject of the final Braves' bobblehead giveaway of the season, Aug. 18. Jason Getz jgetz@ajc.com