If you (like this GalleyCat editor) occasionally confuse the use of “who” and “whom” in your writing, The Oatmeal has created a webcomic and poster to remind you.
The comic uses funny graphics and sentences about spiders, dirty koalas and kids with flamethrowers to teach an important grammar lesson. Click above read the whole comic and follow this link to see the $20 poster version of the comic.