When I was in high school, it was the pet peeve of one of my English teachers that otherwise bright people use the non-word "analyzation" instead of analysis. For me, the equivalent has always been the term "orientate". Though I'm now seeing that my spell check is not taking issue with that last one, I'll continue to contend that it's a redundancy, and one only needs to say "orient", with the past tense being "oriented" rather than the frighteningly ubiquitous "orientated". However, it's come to my notice over time that my diligence only reaches so far and there are at least two such cases where I flagrantly disregard proper usage in favor of that which is more common. These two are "obligated" and "lit". As it turns out, one is obliged and a candle is lighted. I frequently catch myself using the incorrect forms, but don't much seem to care to stop. They're quite often just easier, and the number of people that know the difference is small enough to limit the embarrassment. Still, it makes me feel like a fraud. Of course, since my grammar is better than most of the English teachers I know, that goes away quickly.