The 7 most memorable speeches of 2015

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The best speeches — whether they're funny, inspiring, maddening or harrowing — are remembered long after the speaker has left the stage. Some are notable precisely because someone decides to leave the stage (we're looking at you, Kanye). 

These seven speeches — by actors, musicians, and even the international champion of public speaking — run the emotional gamut and were among the most memorable of 2015.

Scroll through to watch the most memorable speeches of the year, curated by Toastmasters International, a nonprofit that teaches public speaking and leadership skills.

While accepting his Academy Award for Best Supporting Actor, J.K. Simmons told the audience to "call your mom, call your dad" and tell them how much you love them.

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Tim Cook encouraged graduates to find their "North Star" and never forget their values during his commencement speech at George Washington University.

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David Letterman effusively thanked viewers for supporting him throughout his 33-year run as the host of the 'Late Show.'

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