Lots of people impressed me, over the years, for many different qualities.
Among colleagues, Thomas and Dayakar Rao, from VJIM. Dayakar later became VC of ITM Univ. at Raipur. And Banikanta Mishra from XIM, B.K. Mohanty from IIML and XIM, Bharat Bhasker of IIML (now director of IIMA), Harsh Halve of IMT Nagpur, along with Jitendra Sharma, Maheswaran, Smita Dabholkar, Ekkirala, TK C, also from there, Manoharan, Manasa, Shahida from PES, Dhanapal and Vijayakumar of KIAMS, Yashad Gaur from Mysore Kirlsokar, and Indrajit, Jayasimha, Harshal, Shweta Kushal of IIM Indore, Preeti Ravikiran, Narayani, Deepak from NMIMS. The reasons are varied, and will fill a chapter or two.
Students are actually many more in number. I will start with a few- A for Abha, Anchal, Anusha Soni, Anushka Mishra, Aashneet Gautam, Aishwarya (Iyer and Omprakash), Anupama, B for Bhuvneet, Bugzy, Bhawana, Bhavana, Bharath Shenoy, C for Chittaranjan, Chaitra Hegde, D for Deepa Beena, Divya Anand, Divya Sharma, G for Gowri, J for Jogeswari aka Jogi, Jasmine, K for Kokila Chopra, Kanika (2-Mhendiratta and Bhatia), L for Laura Shah, M for Meenu (Mynam), P for Praveen Kotta, Pavan (Tarawade), Praddy, Padmapriya, H for Harshad (Lunavat), N for Nikita, Nandini, Namrutha, Nikhil, Nishka, R for Ruminder Kaur, S for Sheetal, Sirisha, Sanjana Rao, Shreyashi, Sandeep (prof. in U.K. now), Shruti, Shatakshi, Shailaja Gupta, Sanjeev Undri, T for Tosha, Thoshitha, Tanaya Kar, Tanya Jakhar, U for Urmi Patel, Y for Yogita, Yamini Sha, Z for Zenitha and a bunch of Ph.D. students I met recently, including Neeti, Pratishtha, Geeti, Vanshika, ..
Golfers have a special place- Aditi, Garima, Prachi Jain, Aakansh, Sohni Roy (yeah, even a Range qualifies), Muskan Agarwal, Mahek Singhal, and some women faculty - Tanmeet, Alisha and Prerona from NMIMS and Radha Ladkani, IIMI. My regulars Gadgil, Vijayakumar with whom I have been to Kodaikanal for Golf and Dhanapal (we went to Pattaya too with Jogi who runs Golftripz).
Many others, musically minded, but that's for another day..