Let's break it down plain and simple - some people are just cheese-heads, and you can't blame them for being themselves. Cheese is a favorite food stuff among many, and if you often find it hard to tear yourself away from the dairy treats when you're at someone else's shindig, you're certainly not alone.
If you're in the middle of planning an event and happen to know such people will be in attendance, consider throwing your next baby shower or birthday party with a cheese-centered theme, or at least a cheese-centric cocktail hour.
You can really go to town selecting top-quality cheeses from your local grocer, who can probably recommend which kinds to include. Make sure to round up a wide variety - heady stiltons, double creme cheeses, Dubliner cheddars and a robust manchego are all cornerstones of a great selection.
To make the most of your presentation, hold an informative cheese-tasting tutorial (much like you would at a wine tasting). Tell guests about the process each cheese had to go through, and instruct them to savor each bite slowly.
At the end of the event, offering them mini cheese grater favors and baby blocks spreaders wouldn't be too cheesy of a gesture.