As promised here's the list of places visited in Mumbai. I didn't even get a complete year so it's less than 50 but then there are some others to see later someday:
1.Atriya Mall...Barbeque Nation...the best eventhough the mall is not worthy.
2. Phoenix Mall.. lower parel....
3. Marine Drive...the best way to explore is a walk from choupatty through the entire marine drive
5. Dadar beach
6. Dadar market....you will get everything there!
8. Oberoi Mall goregaon
9. Shivaji Park
10. Viviana Mall, Thane
12. Hanging Gardens
13. IIT Bombay....perfect like all IITs
14. Bandra beach
15. Mahim area...there is a unique charm in living across the railway track....large coconut trees all around and the train going along its way parallely...a great place for walks
16. Our Lady of Salvation Church/ Portuguese Church...Dadar
17. Matheran...ok not part of Mumbai but is a very charming place
18. Worli sea-link....a great structure...very beautiful and enthralling....visible from many places
19. 5 gardens....a good childrens park....there several clustered together
20. Siddhivinayak Temple
21. Bandra Marathon....a walk from Bandra Fort across Bandstand through to Linking Road
22. Shopping at Linking Road....a must!
23. Phoenix Mall kurla...Snow world...a lot like some of Delhi's bigger malls.
24. Bandra Barbeque Nation
25. Got to Work near bandstand....had the entire view of sea for many days. I had SRK as my neighbour (even if for workplace!)
26. Ferry Ride from Gateway of India....saw the bluemoon :)
27. Gateway of India
28. Carter road....famous for Sachin's bat and house to many film stars
29. Elephanta caves...a little disappointing but the Ferry ride is worth it
30. Sewri jetty
31. Alibaug....the most common beach getaway for Mumvaikars.
32.Drive through Aarey area....the hills of Mumbai. Such a marvellous city to have both sea and mountains.
33. Juhu beach
34. Khar area...worth attending some fete or social event there
35. Naturals ice cream....ok so not a place but no Mumbai visit is complete without this....out of the world ice cream....you will forget all others like Gelato when you try Gajjar halwa ice cream!
Some other places worth visiting
Mount mary church
Prince of wales museum
Bandra worli sea link at night
Walk of stars
Film city Goregaon
Rajesh Khanna park
Joggers park bandra