Scrum works! Innumerable projects prove that. But, and of course there must be a “but”, Scrum only works, when one has the courage, to really realize the rules and ideas behind Scrum. Scrum is more than just the summation of all the roles, ceremonies and artifacts. With the introduction of Scrum not everything goes the smoothest path from the beginning on. All participants need to get used to the new procedure and will be unsure what needs to be done if something unexpected happens. Problems often lead to “known” mechanisms “just for this one case” instead of solving the problem with the Scrum method. Breaking open the synergy, created by Scrum, the actual effect of Scrum, the outstanding increase of productivity gets lost rapidly.Scrum Anti-Pattern
Here the worst Scrum Anti-Pattern presented:
Scrumtisch Berlin
The Scrumtisch Berlin is an official SCRUM USER GROUP. Every 4-6 weeks we meet, talk, discuss, to exchange information on experiences and of course have a lot of fun.

You can find more information on the Scrumtisch Website
Scrum Implementation
agile42 has helped a lot of companies to introduce Scrum successfully. Agilo is based on these experiences. More about our consulting and training approach and some references are available here:
Agilo™for Scrum
The next generation of Agilo for Scrum addresses the needs of each scrum role by providing an intuitive workflow that facilitates the ceremonies of the scrum process, and by exposing simple interfaces for managing the scrum artifacts.