2005 - Madison River Communications was blocking VOIP services. The FCC put a stop to it.

2005 - Comcast was denying access to p2p services without notifying customers.

2007-2009 - AT&T was having Skype and other VOIPs blocked because they didn't like there was competition for their cellphones.

2011 - MetroPCS tried to block all streaming except youtube. (edit: they actually sued the FCC over this)

2011-2013, AT&T, Sprint, and Verizon were blocking access to Google Wallet because it competed with their bullshit. edit: this one happened literally months after the trio were busted collaborating with Google to block apps from the android marketplace

2012, Verizon was demanding google block tethering apps on android because it let owners avoid their $20 tethering fee. This was despite guaranteeing they wouldn't do that as part of a winning bid on an airwaves auction. (edit: they were fined $1.25million over this)

2012, AT&T - tried to block access to FaceTime unless customers paid more money.

2013, Verizon literally stated that the only thing stopping them from favoring some content providers over other providers were the net neutrality rules in place.

Never forget, your ISP doesn't want to provide everything on the 'net for you at one price.