Bandwagon effect – the tendency to do (or believe) things because many other people do (or believe) the same. Related to groupthink and herd behavior.
Outcome bias – the tendency to judge a decision by its eventual outcome instead of based on the quality of the decision at the time it was made.
Von Restorff effect – the tendency for an item that "stands out like a sore thumb" to be more likely to be remembered than other items
Hindsight bias – sometimes called the "I-knew-it-all-along" effect, the tendency to see past events as being predictable.
Optimism bias – the tendency to be over-optimistic about the outcome of planned actions.
Ostrich effect – ignoring an obvious (negative) situation
Halo effect – the tendency for a person's positive or negative traits to "spill over" from one area of their personality to another in others' perceptions of them
Self-serving bias – the tendency to claim more responsibility for successes than failures. It may also manifest itself as a tendency for people to evaluate ambiguous information in a way beneficial to their interests
Never knew there were so many "biases"...