Conversation so far:
Where does Andy Bernard pick up from season 4?
Between season four and five, Andy Bernard plans his wedding with Angela Martin, although his ideas are often rejected by her.
Does Andy Bernard have any rivalries with Dwight Schrute?
Unbeknownst to Andy Bernard are the continual affairs between his fiancée Angela Martin and Dwight Schrute.
Does Andy Bernard get revenge on Dwight Schrute for continual affairs with Angela Martin?
Dwight Schrute realizes that Angela Martin has had sex with Andy Bernard as well, despite telling Dwight that she had only been sleeping with him.
Are there any other rivalries going on besides Andy Bernard and Dwight Schrute?
In New Boss, Andy Bernard is one of the observers of Michael Scott's immature antics when he starts repeating everything that the new boss, Charles Miner, says.
How did Andy Bernard react to Michael Scott repeating everything that Charles Miner says?
With the rest of the staff, Andy Bernard insists that Michael Scott stop before he makes things worse for himself and for everyone else.
How does the staff telling Michael Scott to stop repeating Charles Miner work out for the company?
David Wallace agrees to fund an anniversary party for him and attend, but Michael Scott abruptly announces his resignation from the company and walks out.

Question: What other interesting events have they had?
Self-contained rewrite: What other interesting events have the members of The Office had in Season 5 besides Angela Martin's affair with Dwight Schrute and Michael Scott leaving the company?