The Insider.com

As the year ends and we become wistful for the preceding 365 days, people will find various routes to reminisce: from breaking out the photo album (if people still have those) to plain breaking down.

• November 30, 2011STREAMING LIVE: Post Grammy Nominations Concert
• November 29, 2011LL Cool J Reminisces About His Grammy Past
• November 28, 2011Charice Gives Touching Tribute to Late Father
• November 20, 2011REPLAY: The AMAs Red Carpet Video Stream
• November 15, 2011Lady Gaga Gives Preview of Her New Book
• November 15, 2011Watch 'Breaking Dawn' Premiere VIP Style

Yet the most infectious way to celebrate 2011 is with the musical mash-up -- videos that anyone with an iTunes account and iMovie will inevitably churn out in the coming days.

But not all mash-ups are created equal. In fact, some plain suck. So allow me to trudge through the sludge and shine up a few sterling examples of audio achievement.

These are the best of 2011's best. Press play and get ready to "Hold It Against Me On The Floor in the Deep..." or something.