They say playing video games helps keep elderly people mentally sharp. "They" in this case are the manufacturers of overpriced, poorly-designed casino game bundles, because who else besides an old person would pay twenty bucks for "1001 Best Keno Games" on CD-Rom for Windows ME?
Thankfully, there's at least one old veteran who has better taste in video games. Hip Grandpa killed Nazis back in the day, and now he's pwning you on Xbox. Who cares if Hip Grandpa calls the Xbox "the Nintendos." He saved your ass in WWII and started prestiging while you were still in short pants. Respect.
Our twenty favorite Hip Grandpa image macros are collected below, courtesy of Quickmeme.