1)   Loco4chat, funny sound clips for chat. 1.5
Play 150+ free funny sound clips during any chat & VoIP (Voice over IP), record your own funny voices and add more. 100% Free! Support: Live Messenger, Yahoo Messenger, Skype, AOL AIM, ICQ, QQ, GTalk, Xfire, TeamSpeak, Ventrilo, Camfrog & Paltak.

 2)   Voice Emotion 2.0.9.12
vEmotion is a plugin for Instant Messengers. It add sound effects to and set background music for voice conversations. Also it records calls into audio files for future review. Enabled IMs include Skype, Msn, Gtalk, AIM, Yahoo Messenger and QQ.