I second the In-Laws and add another Arkin vehicle (which he also directed), “Fire Sale.” From the author of “Where’s Poppa?” and the only movie to make me literally laugh myself sick. Sadly, Fox has yet to release it to home video in any form.
Speaking of Alan Arkin, he added a good funny anchor as the psychiatrist in Grosse Pointe Blank. That was another funny one. Going to high school reunion, “What am I going to say? ‘Hi, I killed the president of Paraguay with a fork’?”