In my job as a consultant I visit a lot of development teams. Most of them are using a ‘Scrum-like’ approach meaning that the typical Scrum ceremony(Daily Standups, Sprint reviews, Retrospectives,…) are in place.
However I noticed that especially the Retrospective becomes boring after a while. To spice up your retrospectives and make them meaningfull again, I recommend having a look at http://www.funretrospectives.com/ . This site brings a lot of activies and ideas together for making agile retrospectives more engaging.
Part of the information is also available as an e-book at http://www.caroli.org/book-fun-retrospectives/