A little advice for No Clue.. by: justjess@ptd.net
I'm not a professional but I do have expertise w/7 kids of my own. A lot of toddlers act out when they can't tell you how they feel or that they have had enough of something.
You should try to see if it really is something particular that set him off. Next time it happens write down what time of day/night and if certain things were going on, like a certain T.V. show, a specific noise/word or the weather.
Also, try to see if you can distract him when he starts to get out of control. Instead of sending him to his room (which could scare him because at 2 he doesn't understand everything that he is feeling/doing) Try to distract him with an activity he LOVES. For example, when you notice it starting say "Billy, do you want to help Mommy make cupcakes?" or "Let's go outside and feed the birds."
This works well with my 2 year old. He loves to "help" me do everything including wash the dishes and make dinner. It is o.k. if they make more of a mess than help. It is spending time with you and what they learn from doing it.
The happiest families often have messy floors and HAPPY KIDS. I hope this helped. Good luck.