I don't get all the down votes on this thread, especially those directed at the OP.
Firstly, the topic is interesting (at least to gourmands), and secondly, the choices expressed are the personal choices of those who posted them - and thus are none of anybody else's business apart from the fact that those who posted them are pleased to share their pleasure of something which they have enjoyed.
Anyway, to the thread: My own personal favourites include the classics: olive oil, sea salt, black pepper, lemons and garlic (a fruit and a vegetable, respectively, not a condiment, I know). Depending on what dish is on offer, I'm also a fan of mustards, and chutneys (brinjal pickle is excellent with Indian food, as are mango pickles and chutneys). In addition, I like olives. For certain dishes, ketchup (I use organic stuff), mayo, blue cheese sauce and ranch sauce have their uses and are just right.
Apple jelly, or red currant jelly are also very good with hard, savoury cheeses, such as Montgomery cheddar, or Coolea, or a very mature Gouda.