My unpopular opinions:
The majority of final fantasy games are rubbish. Of the main series final fantasy games I've played, the only one's I've actually enjoyed are 1, 5, and 6. Of those, the only I actually saw through to the end was 1 (In every other I usually gave up once the difficulty curve turned into a brick wall, I have no patience for grinding), and even then, I found I got less enjoyment out of them than I did out of any of the final fantasy tactics games.
WoW, and by extension most MMORPG's, are incredibly boring, repetitive and unfun. I'd explain why, but I feel Yahtzee's review of it says everything I would want to say and would involve far less typing on my part.
While the DS was a strong, innovative system, the 3DS is an overpriced and ultimately shows Nintendo's decline as an innovator, as the only real innovation is a shortsighted gimmick which feels more like band-wagoning than actual creativity, and I plan to move towards the NGP once it is released.
Apple computer's and products, while good, are overpriced and over-rated.
The majority of people who have a smart-phone do not need a smart phone.
While I am opposed to excessive sequels, I do feel that they are more permissable than some people give them credit for. On that extent, some sequels are in fact superior to the originals in every way. Two examples off the top of my head are Mass Effect 2 (Mass Effect one, while good, had worse writing and more awkward gameplay), and Banjo-Tooie (while the original was quirky, it was short, easy, and not very deep. Banjo-Tooie had more refined, deeper gameplay, was far wittier, had more unique levels, better bosses, was more difficult, and had much more content).
Single player is far more important to most games than multiplayer.
If compared in a vacuum, Poratl 2 is superior to Portal 1.
Lady Gaga and Justin Bieber are better than the majority of pop music stars because they both at least have some artistic talent. Many of Gaga's songs actually have meaning if you look deeply enough into them.
Finally, if Kurt Kobain did not die, today he would likely be remembered less fondly than he is today. Furthermore, while I believe Courtney Love did not kill him, she likely was a negative influence which contributed to his self-destructive behaviour.