I'm watching an episode of Stargate SG-1 (S03E10 "Forever in a Day", for the SG geeks), and one character (Teal'c) just said to another "Is there not some form of human ritual in which I may ask your forgiveness?"
You know, that's actually a pretty good question. Western culture is terrible about forgiveness--by which I mean "letting go of the negative feelings you have towards another who has wronged you." We have lots of words for the various shadings of "anger", but very few for "forgiveness."
Here is the list of synonyms for "anger" from
http://thesaurus.reference.com/browse/anger: Annoyance, crankiness, crotchetiness, displeasure, exasperation, fury, grumpiness, ire, irritation, mad, peevishness, petulance, pique, rage, vexation, and others. (*)
Here is the list of synonyms for "forgiveness" from
http://thesaurus.reference.com/browse/forgiveness absolution, exculpation, exoneration, purgation. (*) (Note that only one of these, "absolution", is actually in common usage, while the others are far more rarely encountered.)
More interestingly, we have no rituals pertaining directly to forgiveness, despite the fact that society is built on rituals. We have rituals for saying hello (shaking hands) and goodbye (waving), for celebrating someone's birth, death, passage into adulthood, for settling conflicts (everything from how to speak appropriately during an argument up to how to have a lawsuit). We have established rituals for saying to someone "I want to spend the rest of my life with you", but no established way of saying "please let me make this up to you" beyond the simple words "I'm sorry"...which pretty much never cut it when you've actually screwed up.
Wouldn't it be nice if there were something like all those science fiction "warrior people" have (e.g. Klingons, Jaffa, etc)? You know, a few rounds of running in circles while people smack you with sticks and then (after the bruises heal), you're good to go and you and the person you wronged are back on a good footing?
(*) There were plenty of other suggested "synonyms", but they were really just related words, not actual versions of the same concept.