Danica McKellar Breaks Rib During ‘Dancing With the Stars’ PracticeDanica McKellar Breaks Rib During ‘Dancing With the Stars’ PracticeOuch! Former 'Wonder Years' star and current 'Dancing with the Stars' contestant Danica McKellar revealed in a tweet that she broke a rib during dancing dance practice for 'DWTS.'Thomas ChauThomas Chau