Omaha is considered, by some, to be the hardest game of Poker to master. Of all of the different games of Poker, Omaha is for many the hardest to learn to play and the hardest to bluff in. It is played most often at fixed limits, like Texas Hold'em and pot limit.

Most of the time, shark refers to a solid professional poker player. The term is often used in a broader context too, as a card shark  is someone well-versed in many card games, not just poker.

There is no evidence, however, for the existence of Tell; but the story of the marksman's test is widely distributed in folklore. In the early Romantic era of nationalist revolutions, the Tell legend attained worldwide renown through the stirring play Wilhelm Tell (1804) by the German dramatist Friedrich von Schiller.

Dennis Nikrasch (September 12, 1941  2010), also known by the alias of Dennis McAndrew, was a Vegas slot cheater and a former locksmith who was responsible for spearheading the biggest casino theft in Las Vegas history, by grabbing $16,000,000 from rigging slot machines over a 22-year period.