A few songs that are just that right mood and speed that you could skip down the sidewalk listening to it.
1) ABBG from Kuch Naa Kaho. A song that uses English letters as a pun for a short conversation in Hindi.
2) Mera Joota Hai Japani from Shree 420. The stuff I listened to as a kid, this song gained immense popularity in countries surrounding India, particularly in Russia.
1) Azhaipaaya from Kadhalil Sodhapuvathu Eppadi. Complicated long name, but one of the most chill songs I've heard in a long time, esp 1:43.
2) Hosanna from Vinnaithandi Varuvaaya. Movie was remade in hindi recently as Ek Deewana Tha. Dance sequence at 1:36 was especially popular.