What's the Kennection? #260

Harvard's annual "freshman week" always features a much-heckled screening of what 1970 Ryan O'Neal movie?

The Lions, Panthers, and Titans are the only NFL teams who wear jerseys of what color?

The chorus of Kipling's poem "Gentlemen-Rankers" describes soldiers "on the spree" who are "damned from here to" what?

In the 1850s, Britain fought a namesake war with China over the right to legally trade what product?

In the Three Musketeers novels of Alexander Dumas, which of the three soldiers eventually becomes a Jesuit priest?

What's the "Kennection"?