The Holy Spirit

The Holy Spirit is great.  Here's 50 reasons why.
(This list was pulled off of here)

1.      He convicts the world of sin, righteousness, and judgment (John 16:8).
2.      He guides us into all truth (John 16:13).
3.      He regenerates us (John 3:5-8; Titus 3:5).
4.      He glorifies and testifies of Christ (John 15:26; 16:14).
5.      He reveals Christ to us and in us (John 16:14-15).
6.      He leads us (Rom. 8:14; Gal. 5:18; Matt. 4:1; Luke 4:1).
7.      He sanctifies us (2 Thess. 2:13; 1 Pet. 1:2; Rom. 5:16).
8.      He empowers us (Luke 4:14; 24:49; Rom. 15:19; Acts 1:8).
9.      He fills us (Eph. 5:18; Acts 2:4; 4:8, 31; 9:17).
10.   He teaches us to pray (Rom. 8:26-27; Jude 1:20).
11.    He bears witness in us that we are children of God (Rom. 8:16).
12.    He produces in us the fruit or evidence of His work and presence (Gal. 5:22-23).
13.    He distributes spiritual gifts and manifestations (the outshining) of His presence to and through the body (1 Cor.     12:4, 8-10; Heb. 2:4).
14.    He anoints us for ministry (Luke 4:18; Acts 10:38).
15.    He washes and renews us (Titus 3:5).
16.    He brings unity and oneness to the body (Eph. 4:3; 2:14-18). Here He plays the same role that He plays in the Godhead. The Spirit is the life that unites Father and Son. He plays the same role in the church. When He is operating in a group of people, He unites them in love. Therefore, a sure evidence of the Holy Spirit working in a group is Love and Unity. Not signs and wonders (those are seasonal and can be counterfeited).
17.    He is our guarantee and deposit of the future resurrection (2 Cor. 1:22; 2 Cor. 5:5).
18.    He seals us unto the day of redemption (Eph. 1:13; 4:30).
19.    He sets us free from the law of sin and death (Rom. 8:2).
20.    He quickens our mortal bodies (Rom. 8:11).
21.    He reveals the deep things of God to us (1 Cor. 2:10).
22.    He reveals what has been given to us from God (1 Cor. 2:12).
23.    He dwells in us (Rom. 8:9; 1 Cor. 3:16; 2 Tim. 1:14; John 14:17).
24.    He speaks to, in, and through us (1 Cor. 12:3; 1 Tim. 4:1; Rev. 2:11; Heb 3:7; Matt. 10:20; Acts 2:4; 8:29; 10:19; 11:12, 28; 13:2; 16:6,7; 21:4,11).
25.    He is the agent by which we are baptized into the body of Christ (1 Cor. 12:13).
26.    He brings liberty (2 Cor. 3:17).
27.    He transforms us into the image of Christ (2 Cor. 3:18).
28.    He cries in our hearts, “Abba, Father” (Gal. 4:6).
29.    He enables us to wait (Gal. 5:5).
30.    He supplies us with Christ (Phil. 1:19, KJV).
31.    He grants everlasting life (Gal. 6:8).
32.    He gives us access to God the Father (Eph. 2:18).
33.    He makes us (corporately) God’s habitation (Eph. 2:22).
34.    He reveals the mystery of God to us (Eph. 3:5).
35.    He strengthens our spirits (Eph. 3:16).
36.    He enables us to obey the truth (1 Pet. 1:22).
37.    He enables us to know that Jesus abides in us (1 John 3:24; 4:13).
38.    He confesses that Jesus came in the flesh (1 John 4:2).
39.    He says “Come, Lord Jesus” along with the bride (Rev. 22:17).
40.    He dispenses God’s love into our hearts (Rom. 5:5).
41.    He bears witness to the truth in our conscience (Rom. 9:1).
42.    He teaches us (1 Cor. 2:13; John 14:26).
43.    He gives us joy (1 Thess. 1:6).
44.    He enables some to preach the gospel (1 Pet. 1:12).
45.    He moves us (2 Pet. 1:21).
46.    He knows the things of God (1 Cor. 2:11).
47.    He casts out demons (Matt. 12:28).
48.    He brings things to our remembrance (John 14:26).
49.    He comforts us (Acts 9:31).
50.    He makes some overseers in the church and sends some out to the work of church planting [through the body] (Acts 20:28; 13:2).