Neil Patrick Harris and David Burtka shared a Father's Day dinner with 8-month-old Harper and Gideon in Sherman Oaks yesterday. The twins apparently weren't cooperating during the family outing since the parents tweeted that they were more fussy than usual, though NPH and David still seemed thrilled to be sharing their first Dad's Day together. The couple have had a lot to celebrate lately since NPH successfully hosted the Tony Awards and turned 38 last week. David threw his partner a huge murder-mystery birthday bash complete with acrobatic entertainment in their backyard. The excitement for NPH doesn't stop there, though, since his musical Company is currently running in select movie theaters across the country.