Stars Turning 40 

Hollywood's eternal obsession with youth aside (especially for female actresses), a new crop hitting their fourth decade in 2013 are just hitting their stride. Kate Beckinsale, for instance, is among a string of reliable marquee action heroines, Kristen Wiig has made that "SNL"-to-screen transition with triumph, and Neil Patrick Harris has grown up to be the favored all-around guy who can play his own supersized, foul-mouthed, hetero-scoundrel alternate ego. And just because we get a little sentimental around birthdays, we're recognizing lesser luminaries in gratitude for delivering memorable Gen-X onscreen moments.