Many of our comics have parody covers (to understand what this is, just compare the images to the left and right). In fact, we actually have more parody covers than original covers. The pattern usually is that issue one of a multi-issue story is an original cover and the subsequent issues have parody covers. We have broken this pattern a couple of times, (technically only once on the one part Christmas Carol issue, but the following issues "Omniscient" weren't parody covers, however, the part 2 cover could arguably be a parody of the part 1 cover, and at this point your probably saying "who cares") but we try to have that be the pattern.
Anyhow, a lot of thought is put into the parody covers that we do. I spend a lot of time searching cover databases (coverbrowser is a great one) looking for covers to possibly parody. We are usually working about six months to a year ahead, so I am constantly jumping around the different stories and issues thinking of what would best portray the comic issue at the time. Some comics lend themselves to a specific cover naturally. Like "Back to the Beginning", as I mentioned in a previous post, the part 2 cover is going to be a parody of the "Back To The Future part 1" box cover (refer to that post for the reference image). However, some comics don't so easily lend themselves to a parody cover, so we have to put a little thought into it.
Our first few parody covers were specifically parodying "first" issues. Like Action Comics #1 (shown on the above left), which is the first appearance of Superman, Incredible Hulk #1 (you can guess who that featured) and so on. We still have a few "first" issues in mind for future covers, but we have expanded to include other interesting covers as well as ones you might recognize right off the bat and some that may be a little more obscure.
I will continue more on this topic later.