A brand new episode of one of our perfect sitcoms, all for a great cause? That's sweeter than a Sweetums Nutriyum! As we previously reported, Parks and Recreation is coming back for a half-hour special episode on April 30, featuring the entire original cast recording themselves remotely, all in order to raise funds for Feeding America. And NBC just released the first clip from the special, featuring our pals Leslie Knope (Amy Poehler) and Ron Swanson (Nick Offerman). [caption id="attachment_705763" align="alignright" width="350"] Image via NBC[/caption] In the brief clip, Leslie checks in to see …